If you are unsure whether to write thier, their, or there, the correct choice depends on what you mean—but thier is not the standard spelling of the English word. In most cases, you are choosing between their and there. If you mean “belonging to them,” use their. If you mean a place, location, or the existence of something, use there.
There is also a third word that sounds the same: they’re, which means “they are.” These words are called homophones because they can sound alike while having different spellings and meanings. Cambridge Dictionary and Merriam-Webster both identify there, their, and they’re as commonly confused words.
This guide explains the difference between thier vs. their vs. there, shows you how to choose the right word in seconds, and covers common mistakes in schoolwork, emails, business writing, and everyday English.
Quick Answer: Thier, Their, or There?
Is “thier” correct?
No. “Thier” is a misspelling. The standard spelling is usually either their or there, depending on the meaning.
- Their = belonging to them
Their house is near the school. - There = a place, location, or existence
The keys are over there. - They’re = they are
They’re waiting outside.
Memory tip:
Think their = belonging, there = location, and they’re = they are.
A useful shortcut is to ask: Can I replace the word with “they are”? If yes, use they’re. If you are talking about something belonging to someone, use their. If you are pointing to a place or saying something exists, use there.
What Does “Their” Mean?
“Their” shows possession or association
Their is a possessive determiner. It normally comes before a noun and indicates that something belongs to, relates to, or is associated with them.
Examples:
- The students finished their assignments.
- The company changed their policy.
- The children packed their bags.
- The players celebrated their victory.
- We visited their office.
Cambridge Dictionary defines their as meaning “of or belonging to them.” It can also be used with a singular person when the person’s gender is unknown or when avoiding his or her.
Why does “their” cause confusion?
The problem is pronunciation. Their, there, and they’re can sound the same or very similar in ordinary speech, so listening alone often does not tell you which spelling to use.
For example:
They left their books over there.
The two words sound similar, but their meanings are completely different.
Key takeaway: Use their when the idea is belonging to them or associated with them.
What Does “There” Mean?
“There” can refer to a place
The most familiar use of there is to identify a location.
Examples:
- Put the box there.
- Your coat is over there.
- We went there yesterday.
- Please wait there.
- I saw your friend standing there.
A simple test is to ask “Where?” If the word answers a question about location, there may be the correct choice.
“There” can also introduce existence
There is another important use that has nothing to do with pointing at a physical location.
Examples:
- There is a problem with the report.
- There are three students in the room.
- There is a new restaurant nearby.
- There were several mistakes in the document.
Cambridge explains that there is and there are are used when we first refer to the existence or presence of someone or something.
So there does not always mean “in that place.” It can also introduce the idea that something exists or is present.
Key takeaway: Use there for location or to introduce existence/presence.
What Does “They’re” Mean?
“They’re” is short for “they are”
Although the search phrase often focuses on thier, their, or there, they’re is important because it is the third commonly confused word.
They’re = they are
Examples:
- They’re ready. → They are ready.
- They’re coming tomorrow. → They are coming tomorrow.
- They’re very talented. → They are very talented.
- They’re working late. → They are working late.
Cambridge Dictionary defines they’re as the short form or contraction of they are.
The replacement test
When you are uncertain, replace they’re with they are.
They’re going home.
Becomes:
They are going home.
The sentence still works, so they’re is correct.
But:
I like they’re new car.
Becomes:
I like they are new car.
That clearly does not work. The correct sentence is:
I like their new car.
Key takeaway: If “they are” fits, choose they’re.
Thier vs. Their vs. There vs. They’re
The easiest way to understand the four spellings is to compare their functions.
| Word | Meaning | Main use | Example |
| thier | No standard meaning | Misspelling | ❌ Thier house is large. |
| their | Belonging to them | Possession/association | Their house is large. |
| there | In/at that place; existence | Location or existence | The house is over there. |
| they’re | They are | Contraction | They’re at home. |
The important distinction is that thier is not a fourth legitimate alternative. It is generally a spelling error caused by reversing the letters in their.
A fast decision guide
Are you talking about something belonging to them?
→ Use their.
Are you talking about a place or saying that something exists?
→ Use there.
Can you replace the word with “they are”?
→ Use they’re.
Did you write “thier”?
→ Check it. You probably mean their.
Why Do People Spell “Their” as “Thier”?
Letter order is the main problem
The spelling thier is a common typographical or spelling error because their contains several letters that are easy to rearrange.
The correct sequence is:
T-H-E-I-R
The common error is:
T-H-I-E-R
This is especially easy to do when writing quickly or typing without proofreading.
The mistake does not usually indicate that the writer does not understand the meaning of the word. Someone may know perfectly well that they mean possession but accidentally type the letters in the wrong order.
A useful spelling trick
Break the word into a visual pattern:
THE + IR → THEIR
Or remember:
Their has heir inside it.
their → heir
An heir is a person connected with inheritance or possession, so this can serve as a useful association for remembering the spelling.
Do not rely on pronunciation. When these words sound alike, meaning and sentence structure should determine the spelling.
Key takeaway: If you frequently type thier, slow down around the e-i sequence in their.
Their vs. There: The Most Important Difference
Compare the meaning, not the sound
Consider these two sentences:
The students left their books there.
Here, their tells us whose books they are.
There tells us where the books were left.
That gives you a powerful distinction:
- Their → whose?
- There → where?
This works in many sentences:
| Question | Correct word | Example |
| Whose? | their | They forgot their keys. |
| Where? | there | Their keys are over there. |
This “whose vs. where” test is particularly useful for students because it focuses on meaning rather than spelling.
Key takeaway: Ask “whose?” for their and “where?” for there.
Common Mistakes With Thier, Their, and There
Mistake 1: Using “thier” for possession
Wrong:
The employees returned to thier offices.
Correct:
The employees returned to their offices.
Why it happens: The letters in their are reversed.
How to avoid it: Check the spelling whenever you type thier. In standard English, change it to their when possession is intended.
Mistake 2: Using “there” for possession
Wrong:
The students submitted there assignments.
Correct:
The students submitted their assignments.
Why: The assignments belong to the students.
Mistake 3: Using “their” for location
Wrong:
Your shoes are over their.
Correct:
Your shoes are over there.
Why: The word identifies a location.
Mistake 4: Using “their” instead of “they’re”
Wrong:
Their going to announce the results tomorrow.
Correct:
They’re going to announce the results tomorrow.
Why: They’re means they are.
Mistake 5: Using “they’re” before a noun to show possession
Wrong:
They’re house was sold.
Correct:
Their house was sold.
You cannot expand they’re to “they are” here:
They are house was sold. ❌
Therefore, their is required.
How to Use These Words in Real-Life Writing
In school and academic writing
Correct word choice matters in essays, assignments, reports, and examinations.
The researchers presented their findings.
Here, the findings belong to the researchers, so their is correct.
There are several factors to consider.
Here, there are introduces the existence of several factors.
They’re likely to publish the results soon.
Here, they’re means they are.
In formal writing, spelling errors such as thier can distract readers even when the intended meaning is obvious.
In business communication
These distinctions also matter in professional emails and reports.
The clients requested changes to their contract.
There is an issue with the payment schedule.
They’re reviewing the proposal now.
Each word performs a different grammatical job, so replacing one with another can change the sentence or make it incorrect.
In everyday messages and social media
Informal communication does not eliminate the distinction.
Where are their bags?
This asks about ownership.
Their bags are over there.
This combines ownership and location.
They’re waiting over there.
This means they are waiting.
Learning the difference helps you write clearly even in short messages.
Singular “They” and the Use of “Their”
Can “their” refer to one person?
Yes. Their can be used with a singular person when the person’s gender is unknown, irrelevant, or intentionally not specified.
For example:
Someone left their phone on the desk.
Here, someone refers to one person, but their is used as a gender-neutral possessive form.
Cambridge Dictionary explicitly gives this use, and Merriam-Webster also recognizes their in reference to an indefinite singular antecedent.
This is an important modern usage because some learners are taught only the traditional plural association with their. Modern English uses singular they/their widely.
Key takeaway: Their can refer to one person as well as multiple people, depending on the sentence.
A 10-Second Editing Test
When proofreading, use this three-question method.
Step 1: Look for possession
Ask:
Does something belong to them or relate to them?
If yes → their
The team changed their strategy.
Step 2: Look for place or existence
Ask:
Am I talking about a location, or introducing something that exists?
If yes → there
The meeting room is over there.
There are two options.
Step 3: Try “they are”
Ask:
Does “they are” make sense?
If yes → they’re
They’re ready.
= They are ready.
If none of these tests works, look at the surrounding sentence before choosing a word.
Expert Editing Tips for Avoiding These Errors
Proofread for meaning before spelling
Do not simply ask, “Does this word look right?” Ask what grammatical job the word is performing.
For example:
The manager said their team would respond.
The word shows association or possession, so their is appropriate.
Search for “thier” during proofreading
If you are editing a document, use your word processor’s search function to find thier. Because it is normally a misspelling, every occurrence deserves a quick check.
This is particularly useful in:
- Essays
- Resumes
- Business reports
- Emails
- Blog posts
- Website copy
- Academic papers
Do not trust spellcheck alone
Spellcheck can catch thier as a spelling error, but it may not catch every confusion between their, there, and they’re because all three are legitimate English words.
For example:
Their going to the office.
The spelling of their is correct, but the word is wrong for the sentence. The intended form is:
They’re going to the office.
This is a word-choice error, not a simple spelling error.
Mini Quiz: Can You Choose the Right Word?
Choose their, there, or they’re.
- The children put ___ shoes by the door.
- Please leave the package over ___.
- ___ planning to visit us tomorrow.
- ___ are several reasons for the decision.
- The employees returned to ___ desks.
- I think ___ waiting outside.
- Your keys should be ___ on the table.
Answers
- their
- there
- they’re
- there
- their
- they’re
- there
The quickest way to check your answers is to identify the function: possession = their, location/existence = there, “they are” = they’re.
Frequently Asked Questions
Is “thier” a real English word?
No. Thier is generally a misspelling of their. If you intend to express possession or association, the standard spelling is their.
Which is correct: “thier house” or “their house”?
Their house is correct. Their indicates that the house belongs to or is associated with them.
Is “there” a possessive word?
No. There is not the possessive form of they. It commonly refers to a location or introduces the existence of something.
Is “their” singular or plural?
Their can be plural or singular. It traditionally refers to multiple people, but it is also widely used with a singular, gender-neutral antecedent such as someone, anyone, or everyone.
Can “there” mean that something exists?
Yes. In sentences such as “There is a problem” and “There are two options,” there introduces the existence or presence of something.
What is the difference between “their” and “they’re”?
Their indicates possession or association, while they’re is a contraction of they are.
Their car is new.
They’re driving it today.
What is the difference between “there” and “they’re”?
There refers to location or existence. They’re means they are.
The students are over there.
They’re studying.
Is “their” always followed by a noun?
Usually, their functions as a possessive determiner and comes before a noun or noun phrase:
their car
their new office
their final decision
The related possessive pronoun theirs can stand alone:
The car is theirs.
How can I remember the spelling of “their”?
Try associating their with heir: th + heir = their. You can also remember that their answers the question “whose?”
Why do “their,” “there,” and “they’re” sound similar?
They are commonly treated as homophones because their pronunciations can be the same or very similar in many varieties of English, even though their meanings and spellings differ.
Is “they’re” acceptable in formal writing?
Yes. They’re is a standard English contraction meaning they are. However, in highly formal contexts, a writer may choose the uncontracted form they are depending on the style and tone.
Key Takeaways
- Thier is a misspelling, not the standard spelling of a separate English word.
- Their means belonging to or associated with them.
- There refers to a place, location, or existence.
- They’re means they are.
- Ask “Whose?” → their.
- Ask “Where?” → there.
- Replace the word with “they are” → they’re.
- Do not rely only on spellcheck because their, there, and they’re are all correctly spelled words in different contexts.
Editorial Note
This article follows standard modern English usage and distinguishes spelling from grammar: thier is a spelling error, while their, there, and they’re are legitimate words with different grammatical functions. Dictionary and grammar guidance from Cambridge Dictionary and Merriam-Webster supports these distinctions.
References
- Cambridge Dictionary — “There, their or they’re?”
- Cambridge Dictionary — “Their”
- Cambridge Dictionary — “They’re”
- Cambridge Dictionary — “There is, there’s and there are”
- Merriam-Webster — “How to Use They’re, There, and Their”
- Merriam-Webster — “Their”
Conclusion
The simplest answer to “thier or their or there?” is that thier is incorrect, while their and there are correct words used for different purposes. Remember their = possession, there = location or existence, and they’re = they are.
When you see thier, stop and check the sentence. If you mean something belongs to them, change it to their. If you mean a place or existence, use there. If the sentence means they are, use they’re.
David James is an English language enthusiast, writer, and author at StudyNixx, a website dedicated to helping readers understand confusing English words, spelling differences, and commonly mistaken word forms. He focuses on making English language learning simple, practical, and easy to understand.
David is also the author of two books on English language and word usage, where he explores common spelling mistakes, confusing words, and practical ways to improve written English. Through his writing and educational content, he helps students, writers, and everyday English learners choose the right words with confidence.
At StudyNixx, David covers common word comparisons such as summary vs. summery, shiny vs. shiney, spicy vs. spicey, and breached vs. breeched. His goal is to provide clear, useful, and reliable explanations that make English spelling and word usage easier for everyone.