I don't think

I'm not sure

A phrase that softens disagreement or expresses doubt: I don't think that's quite right.

Often tacked onto the end of a statement for ironic emphasis, suggesting the opposite is obvious: He's a genius—I don't think.

This trailing use sounds dated now, a relic of 1990s comedy.

doubt

skepticism

Disposition toward doubt

incredulity · suspicion · distrust · misgiving · reservation · qualm · hesitation · second-guessing · unconvinced · dubious

reflection

pondering

Thinking deeply about something

deliberating · contemplating · reasoning · evaluating · processing · assessing · analyzing · ruminating · musing

hedging

tentative

Uncertain and provisional

guarded · diplomatic · evasive · softening · equivocation · vague · indirect · polite · tactful · understated

disagreement

dissent

Disagreement with authority

pushback · challenge · dispute · counterpoint · opposition · rejection · denial · refusal · naysaying · demurral

Opposites
epistemic certainty

I don't thinkI know

Acknowledgment of awareness

without a doubt · definitely · undoubtedly · clearly · obviously

polarity of belief

I don't thinkI think

Tentative opinion marker

I believe · I reckon · I imagine · I suppose · I assume

Family

think, thinking, thinker, rethink, unthinkable, thinkable

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G