emily You’re writing a message, homework, or job application. Everything feels fine until you type one sentence and stop.
Is it their or thier?
You stare at the word. It looks right. Then it looks wrong. You backspace. You type again. Still unsure.
This confusion happens to many people. Students, beginners, and even fluent speakers make this mistake. English spelling is tricky, and some words don’t follow clear rules. The problem is not your intelligence or effort. It’s the language itself. Although their and thier sound similar, only one of them is correct. Once you understand why, you’ll never feel confused again. This small spelling fix can make your writing look clean, confident, and professional.
1. What Does “Their” Mean?
Their is a possessive word.
It shows that something belongs to them.
You use their before a noun.
Simple examples:
- This is their house.
- Students finished their homework.
- Dogs wag their tails.
If something belongs to more than one person, their is the correct word.
2. Is “Thier” a Real English Word?
No.
Thier is NOT a word in English.
It is a spelling mistake.
You will not find “thier” in a dictionary.
If you write thier, it is always wrong.
3. Why Do People Confuse Their and Thier?
The confusion is very common.
Here’s why it happens:
- English spelling rules are inconsistent
- People hear the word before they see it
- Fast typing causes mistakes
- Spellcheck sometimes misses it
Your brain hears the sound and guesses the spelling. That guess is often wrong.
4. The Correct Spelling You Must Remember
The correct spelling is T-H-E-I-R.
👉 Their
There is no correct situation where thier is right.
If you remember only one thing, remember this:
Their = correct. Thier = wrong.
5. Simple Trick to Remember “Their”
Here’s an easy memory trick.
Their contains the word heir.
An heir receives property.
Property = ownership
Ownership = their
This trick works every time 😊
6. How “Their” Is Used in Daily Life
You see their everywhere:
- Text messages
- Emails
- Books
- Exams
- Job applications
Examples:
- People love their freedom.
- Teachers check their papers.
- Parents care about their children.
7. Their vs There vs They’re (Quick Note)
Many learners mix these three words.
- Their → shows ownership
- There → shows a place
- They’re → means they are
Examples:
- Their car is red.
- The car is over there.
- They’re happy today.
Different meaning. Different use.
8. Real-Life Conversation Examples
Example 1
Student: “Is it thier books?”
Teacher: “No, it’s their books.”
🎯 Lesson: Thier is always wrong.
Example 2
Friend: “I like thier house.”
You: “You mean their house.”
🎯 Lesson: Ownership needs “their”.
Example 3
Email draft: “Please submit thier forms.”
Correction: “Please submit their forms.”
🎯 Lesson: Professional writing needs correct spelling.
9. When You Must Use “Their”
Use their when:
- Something belongs to people
- You talk about groups
- Gender is unknown or mixed
Examples:
- Someone forgot their bag.
- Everyone has their opinion.
10. Common Mistakes People Make
- Writing thier instead of their
- Typing fast without checking
- Trusting autocorrect blindly
These mistakes make writing look careless.
11. Why This Mistake Is Serious in Exams and Jobs
In exams, spelling mistakes reduce marks.
In jobs, they:
- Look unprofessional
- Show poor attention
- Create bad impressions
One small spelling error can hurt credibility.
12. How to Fix This Mistake Forever
Follow these steps:
- Always pause on this word
- Check spelling before sending
- Practice writing sentences
- Use grammar tools
With practice, it becomes automatic.
13. Practice Sentences (Try Yourself)
Fill in the blank:
- Students forgot ___ bags.
- Dogs love ___ owners.
- Children cleaned ___ room.
Answer: Their, their, their.
Never thier.
14. Fun Facts About “Their”
- “Their” comes from Old Norse language
- English borrowed it hundreds of years ago
- “Thier” never existed as a word
Interesting, right?
15. Final Rule You Should Never Forget
There is only one correct word.
✔ Their → correct
❌ Thier → wrong
No exceptions. No confusion.
Frequently Asked Questions
Q1: Is “thier” ever correct?
No. It is always wrong.
Q2: Why do people still write thier?
Because English spelling is confusing and people type fast.
Q3: Can spellcheck miss this mistake?
Yes. That’s why you should check manually.
Q4: Is “their” singular or plural?
It can be both, depending on context.
Q5: Is this mistake common among native speakers?
Yes. Even native speakers make it.
Conclusion
Understanding the difference between their or thier is easier than it seems. The truth is simple: their is the correct word, and thier is always a mistake. Their shows ownership and is used every day in speaking and writing. Once you remember this rule, your sentences will look cleaner and more professional. This small spelling fix can improve your confidence and writing quality instantly. Next time you type this word, you won’t hesitate. You’ll know exactly which one is right.
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