- 1(informal) a way of emphasizing that something is true and that there is no doubt about it I definitely remember sending the letter. “Was it what you expected?” “Yes, definitely.” “Do you plan to have children?” “Definitely not!” Some old people want help; others most definitely do not.
- 2in a way that is certain or that shows that you are certain The date of the move has not been definitely decided yet (= it may change). Please say definitely whether you will be coming or not.
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