All English varietieslegalformal
- To affirm honestly and under oath the factual accuracy of one's statements, especially in a court or legal proceeding.
All English varietiesneutralinformal
- To speak honestly or candidly; to state what one actually believes or feels.
All English varietiescolloquialconversational
- A discourse marker used to introduce a frank or candid remark (equivalent to 'frankly' or 'to be honest').