Their vs Thier is a common English spelling confusion because these words can look or sound similar, but only one is correct for showing ownership. In English grammar, their is a possessive pronoun or possessive adjective that expresses ownership, possession, or belonging to them. For example, “Their car is red” and “That’s their car” show who owns the property or car. The
word heir can help you remember the spelling, while thier is an incorrect spelling and their is the correct spelling. These commonly confused words can be tricky for new students, learners, and English language learners, especially when different spellings and meanings create word confusion.
Understanding context, word meaning, sentence structure, spelling rules, and grammar rules can help prevent spelling mistakes and grammar mistakes. From my experience with written English, learning through simple sentence examples makes correct word usage easier.
There refers to a place, location, spatial reference, or place reference, and it can indicate something at a distance. Examples include “Get away from there,” “Stop right there,” and “I wouldn’t go there if I were you.” Remembering the word here can help you understand this meaning. They’re is a contraction of they are, and the apostrophe represents dropped letters,
as in “They’re coming by later” and “They’re getting married.” Other homophones include cite and sight, flower and flour, and hole and whole. When spoken aloud, these pairs sound exactly alike or have identical pronunciation, but they are spelled differently and have different meanings. The term homophones relates to the idea of the same sounds, while homonyms, a term associated with the Latin meaning “same sounds,” can
also be puzzling to identify. These commonly confused, commonly misused, and commonly misspelled words may appear on a personal list of grammar pet peeves because they are commonly considered annoying
words and sources of frequent linguistic blunders. Language learning, vocabulary development, pronunciation practice, and attention to context help students use these words correctly.
Their vs Thier: The Quick Answer
The simple answer is:
Their is the correct English spelling. Thier is incorrect.
Their is a possessive determiner used to show that something belongs to or is associated with two or more people or, in modern English, sometimes with one person when gender is unknown or unspecified.
Examples:
- The students brought their books.
- Someone left their phone on the table.
- The children are playing in their garden.
Thier has no standard grammatical use in modern English. It is simply a spelling error.
| Word | Correct? | Meaning | Example |
| Their | Yes | Shows possession or association | Their car is new. |
| Thier | No | Misspelling of their | Thier car is new. |
What Does Their Mean?
Their is a possessive word. It tells us that something belongs to, relates to, or is connected with someone.
It is commonly used before a noun.
Basic pattern
Their + noun
Examples:
- their house
- their teacher
- their car
- their parents
- their idea
- their school
Consider this sentence:
The students finished their homework.
Here, their tells us that the homework belongs to or is associated with the students.
Unlike they’re, which means they are, their shows possession.
Why Is Thier Incorrect?
Thier is incorrect because the letters are in the wrong order. English spelling can be confusing because several words have similar letter patterns.
The correct spelling is:
T-H-E-I-R → their
The incorrect spelling is:
T-H-I-E-R → thier
A useful way to remember the correct spelling is to notice the sequence “ei” in their:
th + ei + r = their
Although spelling rules do not always make English words predictable, repeated practice can make the correct form easier to remember.
If you see thier in formal writing, academic work, professional communication, or an English exam, replace it with their.
Their Sentence Structure and Grammar Rules
The most common sentence structure involving their is:
Subject + verb + their + noun
Examples:
- The students opened their books.
- The players changed their uniforms.
- The workers completed their tasks.
- The children cleaned their room.
Another common pattern is:
Subject + verb + noun + their + noun
Example:
The students submitted their assignments.
Here, their comes before the noun assignments.
Their with singular nouns
Their can also refer to one person when the person’s gender is unknown, irrelevant, or intentionally unspecified.
Example:
Someone forgot their umbrella.
This use is now common in standard English and is known as singular they/their.
Their, There, and They’re: Do Not Confuse Them
One of the most important English spelling distinctions is between their, there, and they’re.
Although these words sound similar, they have different meanings.
| Word | Meaning | Example |
| Their | Possession or association | Their dog is friendly. |
| There | Place or existence | The dog is over there. |
| They’re | They are | They’re happy. |
Compare the three
- Their house is beautiful.
- The house is over there.
- They’re living in that house.
A simple memory trick is:
Their = belonging
There = place
They’re = they are
This distinction is especially important in writing because spelling and grammar errors can change the meaning of a sentence.
Their vs Thier Examples in Everyday English
Here are several real-life examples showing the correct use of their.
Examples
- Their car is parked outside.
- The students finished their homework.
- The children are eating their lunch.
- The workers returned to their office.
- The players celebrated their victory.
- My friends invited me to their party.
- The teachers checked their papers.
- The parents picked up their children.
- The birds returned to their nest.
- The company changed their policy.
Incorrect examples
- Thier car is parked outside.
- The students finished thier homework.
- The children are eating thier lunch.
In each case, thier should be replaced with their.
Their With Verbs and Verb Forms
Their itself is not a verb. It is a possessive determiner, so it usually appears before a noun.
However, the noun after their can be part of a sentence containing many different verbs.
Examples:
- They finished their work.
- They lost their keys.
- They visited their parents.
- They sold their house.
- They changed their plans.
The verb changes according to the subject and tense, not because of the word their.
For example:
- They complete their work. — Present
- They completed their work. — Past
- They will complete their work. — Future
The possessive word remains their in all three sentences.
Their and English Tenses
Their can be used with different tenses because it is not tied to a particular time.
Present tense
They clean their room every day.
Past tense
They cleaned their room yesterday.
Future tense
They will clean their room tomorrow.
This means their can appear with present, past, and future forms.
For example, even when studying future indefinite tense examples, you can use their naturally:
- They will visit their grandparents.
- The students will submit their assignments.
- The players will wear their new uniforms.
The same principle applies to other tense structures.
Their in Clauses and Longer Sentences
Their can appear in both simple sentences and more complex clauses.
A clause contains a subject and a verb. When a sentence contains more than one clause, their may occur in either clause.
Simple clause
The students finished their work.
Dependent clause
When the students finished their work, they went home.
Two-clause sentence
The players celebrated because they had won their match.
In each example, their shows a relationship between people and something associated with them.
Understanding clauses helps learners see why their can appear naturally in different sentence patterns.
Common Mistakes With Their and Thier
English learners commonly make several mistakes with this word.
Mistake 1: Writing thier
Incorrect: They forgot thier books.
Correct: They forgot their books.
Mistake 2: Confusing their with they’re
Incorrect: Their going to the store.
Correct: They’re going to the store.
Here, they’re means they are.
Mistake 3: Confusing their with there
Incorrect: Their is a problem.
Correct: There is a problem.
Here, there introduces the existence of something.
Mistake 4: Using their without understanding possession
Incorrect: Their are three students.
Correct: There are three students.
Remember that their normally shows possession or association.
Their vs Thier Comparison Table
The following table gives a quick comparison for students.
| Feature | Their | Thier |
| Standard spelling | Yes | No |
| Part of speech | Possessive determiner | None in standard English |
| Shows possession | Yes | No |
| Used before nouns | Yes | No |
| Common in English | Yes | No |
| Correct in formal writing | Yes | No |
| Example | Their house is large. | Thier house is large. |
Therefore, whenever you are choosing between their vs thier, choose their.
How to Remember the Correct Spelling of Their
If you often write thier, use a simple memory technique.
Remember “EI”
The correct spelling is:
THEIR
It contains EI, not IE.
You can practice with short phrases:
- their house
- their car
- their school
- their family
- their friends
Write these phrases several times until the spelling becomes familiar.
Another useful technique is to remember:
Their has heir inside it.
th + heir = their
This can help you remember the letter order.
Their vs Thier FAQs
Is thier a correct word?
No. Thier is a common spelling mistake. The correct spelling is their.
What is the difference between their and thier?
Their is a correct possessive determiner. Thier is an incorrect spelling.
What does their mean?
Their shows possession, ownership, or association. For example, “The students brought their books.”
Is their a pronoun?
In traditional grammar, their is generally classified as a possessive determiner when it comes before a noun. The related standalone form is theirs, as in “The books are theirs.”
What is the difference between their and they’re?
Their shows possession, while they’re is a contraction of they are.
- Their dog is friendly.
- They’re friendly.
What is the difference between their and there?
Their shows possession or association. There usually refers to a place or introduces the existence of something.
- Their house is large.
- Their house is over there.
Can their refer to one person?
Yes. Their can be used with singular they when referring to one person whose gender is unknown, unspecified, or when a person uses they/them pronouns.
Example:
Someone left their phone here.
Conclusion: Their or Thier?
When choosing between their vs thier, the answer is simple: their is the correct spelling, while thier is a misspelling.
Use their to show possession or association:
The students brought their books.
Do not write:
The students brought thier books.
Also remember the difference between their, there, and they’re. Their shows possession, there refers to a place or existence, and they’re means they are.
Mastering these small distinctions can improve your English grammar, spelling, sentence structure, writing accuracy, and confidence. Whether you are a beginner, student, or professional writer, choosing their instead of thier will keep your writing correct and clear.
Their vs Thier: Which Spelling Is Correct?
Introduction: Their vs Thier
Their vs thier is a common spelling confusion in English. If you have ever wondered whether to write their or thier, you are not alone. Many students and English learners accidentally switch the letters in this word.
The correct spelling is their. Thier is a misspelling and should not be used in standard English.
For example:
- Correct: Their house is near the school.
- Incorrect: Thier house is near the school.
In this guide, you will learn the meaning of their, why thier is incorrect, how to use their in a sentence, common mistakes, sentence structure, and practical examples.
Their vs Thier: The Quick Answer
The simple answer is:
Their is the correct English spelling. Thier is incorrect.
Their is a possessive determiner used to show that something belongs to or is associated with two or more people or, in modern English, sometimes with one person when gender is unknown or unspecified.
Examples:
- The students brought their books.
- Someone left their phone on the table.
- The children are playing in their garden.
Thier has no standard grammatical use in modern English. It is simply a spelling error.
| Word | Correct? | Meaning | Example |
| Their | Yes | Shows possession or association | Their car is new. |
| Thier | No | Misspelling of their | Thier car is new. |
What Does Their Mean?
Their is a possessive word. It tells us that something belongs to, relates to, or is connected with someone.
It is commonly used before a noun.
Basic pattern
Their + noun
Examples:
- their house
- their teacher
- their car
- their parents
- their idea
- their school
Consider this sentence:
The students finished their homework.
Here, their tells us that the homework belongs to or is associated with the students.
Unlike they’re, which means they are, their shows possession.
Why Is Thier Incorrect?
Thier is incorrect because the letters are in the wrong order. English spelling can be confusing because several words have similar letter patterns.
The correct spelling is:
T-H-E-I-R → their
The incorrect spelling is:
T-H-I-E-R → thier
A useful way to remember the correct spelling is to notice the sequence “ei” in their:
th + ei + r = their
Although spelling rules do not always make English words predictable, repeated practice can make the correct form easier to remember.
If you see thier in formal writing, academic work, professional communication, or an English exam, replace it with their.
Their Sentence Structure and Grammar Rules
The most common sentence structure involving their is:
Subject + verb + their + noun
Examples:
- The students opened their books.
- The players changed their uniforms.
- The workers completed their tasks.
- The children cleaned their room.
Another common pattern is:
Subject + verb + noun + their + noun
Example:
The students submitted their assignments.
Here, their comes before the noun assignments.
Their with singular nouns
Their can also refer to one person when the person’s gender is unknown, irrelevant, or intentionally unspecified.
Example:
Someone forgot their umbrella.
This use is now common in standard English and is known as singular they/their.
Their, There, and They’re: Do Not Confuse Them
One of the most important English spelling distinctions is between their, there, and they’re.
Although these words sound similar, they have different meanings.
| Word | Meaning | Example |
| Their | Possession or association | Their dog is friendly. |
| There | Place or existence | The dog is over there. |
| They’re | They are | They’re happy. |
Compare the three
- Their house is beautiful.
- The house is over there.
- They’re living in that house.
A simple memory trick is:
Their = belonging
There = place
They’re = they are
This distinction is especially important in writing because spelling and grammar errors can change the meaning of a sentence.
Their vs Thier Examples in Everyday English
Here are several real-life examples showing the correct use of their.
Examples
- Their car is parked outside.
- The students finished their homework.
- The children are eating their lunch.
- The workers returned to their office.
- The players celebrated their victory.
- My friends invited me to their party.
- The teachers checked their papers.
- The parents picked up their children.
- The birds returned to their nest.
- The company changed their policy.
Incorrect examples
- Thier car is parked outside.
- The students finished thier homework.
- The children are eating thier lunch.
In each case, thier should be replaced with their.
Read More;Outting vs Outing: Which Spelling Is Correct
Their With Verbs and Verb Forms
Their itself is not a verb. It is a possessive determiner, so it usually appears before a noun.
However, the noun after their can be part of a sentence containing many different verbs.
Examples:
- They finished their work.
- They lost their keys.
- They visited their parents.
- They sold their house.
- They changed their plans.
The verb changes according to the subject and tense, not because of the word their.
For example:
- They complete their work. — Present
- They completed their work. — Past
- They will complete their work. — Future
The possessive word remains their in all three sentences.
Their and English Tenses
Their can be used with different tenses because it is not tied to a particular time.
Present tense
They clean their room every day.
Past tense
They cleaned their room yesterday.
Future tense
They will clean their room tomorrow.
This means their can appear with present, past, and future forms.
For example, even when studying future indefinite tense examples, you can use their naturally:
- They will visit their grandparents.
- The students will submit their assignments.
- The players will wear their new uniforms.
The same principle applies to other tense structures.
Their in Clauses and Longer Sentences
Their can appear in both simple sentences and more complex clauses.
A clause contains a subject and a verb. When a sentence contains more than one clause, their may occur in either clause.
Simple clause
The students finished their work.
Dependent clause
When the students finished their work, they went home.
Two-clause sentence
The players celebrated because they had won their match.
In each example, their shows a relationship between people and something associated with them.
Understanding clauses helps learners see why their can appear naturally in different sentence patterns.
Common Mistakes With Their and Thier
English learners commonly make several mistakes with this word.
Mistake 1: Writing thier
Incorrect: They forgot thier books.
Correct: They forgot their books.
Mistake 2: Confusing their with they’re
Incorrect: Their going to the store.
Correct: They’re going to the store.
Here, they’re means they are.
Mistake 3: Confusing their with there
Incorrect: Their is a problem.
Correct: There is a problem.
Here, there introduces the existence of something.
Mistake 4: Using their without understanding possession
Incorrect: Their are three students.
Correct: There are three students.
Remember that their normally shows possession or association.
Their vs Thier Comparison Table
The following table gives a quick comparison for students.
| Feature | Their | Thier |
| Standard spelling | Yes | No |
| Part of speech | Possessive determiner | None in standard English |
| Shows possession | Yes | No |
| Used before nouns | Yes | No |
| Common in English | Yes | No |
| Correct in formal writing | Yes | No |
| Example | Their house is large. | Thier house is large. |
Therefore, whenever you are choosing between their vs thier, choose their.
How to Remember the Correct Spelling of Their
If you often write thier, use a simple memory technique.
Remember “EI”
The correct spelling is:
THEIR
It contains EI, not IE.
You can practice with short phrases:
- their house
- their car
- their school
- their family
- their friends
Write these phrases several times until the spelling becomes familiar.
Another useful technique is to remember:
Their has heir inside it.
th + heir = their
This can help you remember the letter order.
Conclusion
In conclusion, Their vs Thier is a common English spelling confusion, but their is the correct spelling when showing ownership or possession. Thier is a misspelling and should be avoided in formal and everyday writing. Remember that there refers to a place, while they’re is a contraction of “they are.” Understanding the differences between these words, checking sentence context, and practicing with examples can help you improve your English grammar, spelling, and vocabulary.
FAQs
1. What is the difference between their and thier?
Their is the correct spelling and shows ownership, as in “That is their house.” Thier is an incorrect spelling.
2. Is thier a real English word?
No, thier is not a standard English word. It is usually a spelling mistake for their.
3. What does their mean in a sentence?
Their is a possessive word that shows something belongs to people or things. For example, “Their car is red.”
4. What is the difference between their, there, and they’re?
- Their: Shows ownership — “Their books are new.”
- There: Refers to a place — “Put the bag there.”
- They’re: Means “they are” — “They’re coming later.”
5. Why do people confuse their and thier?
People often confuse these spellings because they type quickly or remember the letters in the wrong order. Checking spelling and reading the sentence carefully can help prevent mistakes.
6. How can I remember the correct spelling of their?
Remember that their contains the letters t-h-e-i-r. Practice writing sentences such as “Their house is beautiful” to remember the correct spelling.
