Many people get confused between their and thier because the words look very similar. It is a common spelling mistake, especially for students, ESL learners, and even native English speakers.
The good news is simple: only one spelling is correct in English.
In this article, you will learn the difference in very easy English, see real-life examples, understand common mistakes, and remember the correct spelling without confusion.
Quick Answer
Here is the simple answer:
- Their = Correct English word
- Thier = Incorrect spelling
Easy Memory Tip
Think about this rule:
“I comes before E” does not work here.
The correct spelling is:
- th + e + i + r = their
Wrong spelling:
- th + i + e + r = thier
Example
✅ Their house is beautiful.
❌ Thier house is beautiful.
Simple Background Explanation
The word their is a possessive word in English. It shows that something belongs to people or a group.
For example:
- Their books
- Their car
- Their ideas
The word has been used in English for hundreds of years.
The spelling thier is not a real English word. It usually happens because people type too fast or mix up the letters i and e.
This mistake is very common because English spelling can sometimes feel confusing.
What Does “Their” Mean?
“Something belongs to them.”
It is used when talking about more than one person, or sometimes a person whose gender is unknown.
Examples
- The students forgot their bags.
- My friends love their new teacher.
- People should respect their parents.
In all these examples, something belongs to someone.
Why “Thier” Is Wrong
The spelling thier is simply a spelling error.
It is not accepted in:
- School writing
- Exams
- Emails
- Books
- News articles
- Professional writing
Spell check tools usually mark it as incorrect.
Example
❌ Thier dog is cute.
✅ Their dog is cute.
Clear Difference Between Their and Thier
The difference is very simple:
- Their = correct spelling
- Thier = wrong spelling
Many learners accidentally switch the letters e and i.
Comparison Table
| Word | Correct or Wrong? | Meaning | Example |
| Their | Correct | Shows ownership | Their room is clean. |
| Thier | Wrong | No meaning in English | Thier room is clean. ❌ |
Which One Should You Use?
You should always use their.
Use “Their” When:
- Something belongs to people
- Talking about groups
- Talking about ownership
Examples
- Their parents are kind.
- The players wore their uniforms.
- Children need their sleep.
Never Use “Thier”
Even if you see it online or in messages, it is still incorrect.
Easy Trick to Remember the Correct Spelling
Here are some simple memory tricks.
Trick 1: “Heir” Is Inside “Their”
Look carefully:
T + heir = their
The word “heir” is inside “their.”
This can help you remember the correct order of letters.
Trick 2: Think of “THEIR TEAM”
Both words start with:
- THEI
This may help your brain remember the correct spelling.
Trick 3: Read It Slowly
Say the letters slowly:
- T-H-E-I-R
Reading slowly can help stop typing mistakes.
Common Mistakes People Make
Here are mistakes many learners make.
1. Switching the Letters
❌ Thier
✅ Their
This is the most common mistake.
2. Mixing “Their,” “There,” and “They’re”
These words sound similar but have different meanings.
| Word | Meaning | Example |
| Their | Belonging to them | Their car is new. |
| There | A place | The keys are there. |
| They’re | Short for “they are” | They’re happy today. |
3. Typing Too Fast
Sometimes people know the correct spelling but type quickly and make mistakes.
Always reread your writing before sending messages or homework.
Everyday Real Life Examples
Here are examples from normal daily life.
In Emails
✅ Their meeting starts at 10 AM.
❌ Thier meeting starts at 10 AM.
In School Writing
✅ Students should bring their notebooks.
❌ Students should bring thier notebooks.
On Social Media
✅ Their vacation photos look amazing.
❌ Thier vacation photos look amazing.
In News Writing
✅ The team celebrated their victory.
❌ The team celebrated thier victory.
In Daily Conversation Writing
✅ My neighbors painted their house.
❌ My neighbors painted thier house.
Practice Sentences
Choose the correct word.
- The children cleaned ___ room.
- My friends forgot ___ keys.
- The teachers checked ___ emails.
Answers
- their
- their
- their
Remember: their is always the correct spelling.
Short Learning Section for Students and Beginners
If you are learning English, do not worry about this mistake. Many people confuse these letters.
The best way to learn is through practice.
Simple Study Tips
- Write the word “their” several times
- Read English sentences daily
- Use spelling check tools
- Practice short sentences
- Read slowly when typing
Helpful Sentence Pattern
Their + thing
Examples:
- Their books
- Their phone
- Their classroom
This pattern is easy to remember.
Mini Quiz
Which sentence is correct?
A.
Thier dog likes to play.
B.
Their dog likes to play.
✅ Correct Answer: B
FAQ
1. Is “thier” a real English word?
No. “Thier” is not a correct English word. It is a spelling mistake.
2. Which spelling is correct: their or thier?
The correct spelling is their.
3. Why do people write “thier”?
People often switch the letters “i” and “e” by mistake while typing or writing quickly.
4. What does “their” mean?
“Their” shows ownership or belonging.
Example:
- Their shoes are outside.
5. Is “their” singular or plural?
Usually, it refers to more than one person. Sometimes it can also refer to one person when gender is unknown.
Example:
- Every student should bring their ID card.
6. How can I remember the correct spelling?
Remember this order:
T-H-E-I-R
You can also remember that “heir” is inside “their.”
7. Is it okay to use “thier” in text messages?
It is still incorrect, even in text messages. Many people may understand it, but proper English uses “their.”
8. Do native English speakers make this mistake too?
Yes. Even native speakers sometimes type “thier” by accident.
Conclusion
Here is the final answer:
- ✅ Their = correct spelling
- ❌ Thier = incorrect spelling
Use their when talking about something that belongs to people.
Final Example
✅ Their ideas were excellent.
❌ Thier ideas were excellent.
With a little practice, you will remember the correct spelling easily and avoid this common English mistake forever.
