Cool MateMeaning of I'm not sure
A phrase expressing uncertainty or doubt.
In simple words: I don't know if it's true or not.
I'm not sure in a sentence
- I'm not sure if it will rain tomorrow.
- When asked about the meeting time, I said, 'I'm not sure.'
- I'm not sure how to solve this problem.
- During the discussion, I admitted, 'I'm not sure about the facts.'
- Before making a decision, I thought, 'I'm not sure if this is right.'
How to use I'm not sure
Used when expressing doubt about something. Common in conversations but less formal in writing.
Grammar pattern
standalone phrase
Memory hint
Think of it as saying 'I’m not completely sure' - imagine a person scratching their head in confusion.
Related words
Collocations with I'm not sure
- I'm not sure about that
- I'm not sure if
- I'm not sure what to do
Synonyms for I'm not sure
- I'm unsure
- I don't know
- I have doubts
- It's unclear
- I'm indecisive
Common mistakes with I'm not sure
- Using it too formally in writing.
- Confusing it with 'I'm not certain' - which is slightly more formal.
- Overusing it in situations that require decisiveness.
I'm not sure appears in
I'm not sure in other languages
More chunks like I'm not sure
- I don't know
I am not sure.
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- Do i like him
A question asking if one has positive feelings towards a male person.
- It doesn't matter
A phrase used to express that something is insignificant.
- It is what it is
A phrase used to express acceptance of a situation without trying to change it.
- That's what you are
A phrase used to identify or describe someone's character or actions.
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Frequently asked questions about I'm not sure
What does I'm not sure mean?
I don't know if it's true or not.
What is the definition of I'm not sure?
A phrase expressing uncertainty or doubt.
How do you use I'm not sure in a sentence?
I'm not sure if it will rain tomorrow.
Can you give another example of I'm not sure?
When asked about the meeting time, I said, 'I'm not sure.'
What are synonyms for I'm not sure?
Common alternatives include I'm unsure, I don't know, I have doubts, It's unclear, I'm indecisive.
What words go with I'm not sure?
It commonly pairs with I'm not sure about that, I'm not sure if, I'm not sure what to do.
What are common mistakes when using I'm not sure?
Using it too formally in writing. Confusing it with 'I'm not certain' - which is slightly more formal. Overusing it in situations that require decisiveness.
How do you pronounce I'm not sure?
US: //aɪm nɑt ʃʊr//, UK: //aɪm nɒt ʃʊə//. Listen to the audio above to hear native pronunciation.
When should I use I'm not sure?
Used when expressing doubt about something. Common in conversations but less formal in writing.