Definition of in no uncertain terms
- My mother told me in no uncertain terms to never say that word again!
: indefinite, indeterminate
: not certain to occur : problematical
: not reliable : untrustworthy
: a word or expression that has a precise meaning in some uses or is peculiar to a science, art, profession, or subject
: expression of a specified kind
: a limited or definite extent of time
: to apply a term to : call, name
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