- A polite and relatively indirect way to express doubt, disagreement, or skepticism about a statement someone has made.
- It avoids a direct I disagree or You're wrong.
Explanation
Origin
- Standard English phrase construction.
- Reflects a conversational norm of softening disagreement to maintain politeness or avoid confrontation.
Synonyms & Related Expressions
Alternatives
More Direct:
- I disagree.
- I doubt that.
- That sounds wrong.
Informal/Colloquial:
- Really? (Expresses surprise/doubt)
- Dunno 'bout that. (Slangy contraction of don't know about that)
- Is that right? (Can be skeptical)
Slang/Dismissive:
- Yeah, right. (Often sarcastic, implying disbelief)
- Pull the other one, it's got bells on. (UK slang, meaning 'I don't believe you')
- No cap? (AAVE/internet slang asking for confirmation, implying slight doubt though often used just to seek emphasis) / Responding with Cap (Meaning 'that's a lie/exaggeration')
Situational Appropriateness
- Very appropriate for most situations, from informal to formal.
- It's polite and less confrontational than direct disagreement. Good for maintaining rapport.
Misunderstanding Warnings
- It's a mild form of disagreement. Some direct communicators might prefer a clearer stance, but it's generally understood as expressing doubt.
Examples
- Person A: This new strategy is guaranteed to work. Person B: I'm not so sure about that. There are still some risks.
- Person A: He said he'd be here by 8:00. Person B: I'm not so sure about that. He's usually late.
- Person A: Everyone loves pineapple on pizza! Person B: I'm not so sure about that.
Dialogue
Ali: I read online that drinking lemon water first thing cures everything!
Beth: Hmm, I'm not so sure about that. While hydration is good, 'cures everything' sounds like a huge exaggeration. There's probably no scientific evidence for that specific claim.
Ali: Really? Maybe I should look into it more before I start doing it then.
Social Media Examples
- Reply to a comment: User A: This stock is going to the moon! User B: I'm not so sure about that, market looks volatile. #Investing
- Twitter response: Claiming AI will take all jobs in 5 years? I'm not so sure about that. Automation creates new roles too. #AI #FutureOfWork
- Chat: Friend: Let's just wing the presentation. Me: I'm not so sure about that, maybe we should prepare a little?
Response Patterns
- Asking for reasons: Oh? Why do you say that? / What makes you unsure?
- Defending the original statement: Well, the data seems to support it. / But he promised!
- Acknowledging the doubt: Yeah, maybe you're right. / Okay, perhaps 'guaranteed' is too strong.
Common Follow-up Questions/Actions
- The person expressing doubt usually explains their reasoning or the basis for their skepticism immediately after.
- The conversation continues by exploring the doubts or alternative possibilities.
Conversation Starter
- No. It's a response to a statement.
Intonation
- Often said with a hesitant or thoughtful tone.
- Stress can be on not or sure. I'm NOT so sure about that. or I'm not SO SURE about that.
- Intonation might trail off slightly, indicating uncertainty.
Generation Differences
- Commonly used by all generations.
Regional Variations
- Standard and common in all major English-speaking regions.