definitiveadjective
uk/dɪˈfɪn.ɪ.tɪv/us/dɪˈfɪn.ə.t̬ɪv/C2 not able to be changed or improved:
a definitive judgment/ruling
There are no definitive answers/solutions to this problem.
The police have no definitive proof of her guilt.
considered to be the best of its type:
He's written the definitive guide to Thailand.
Thesaurus: synonyms and related words
Certainty
- (as) clear as day idiom
- (as) sure as eggs is eggs idiom
- and that's flat! idiom
- assured
- assuredly
- bet
- consider it done idiom
- cut and dried
- decided
- decidedly
- definite
- doubt
- indeed
- natch
- pronounced
- proof positive
- seal
- set/put the seal on sth idiom
- shadow
- signed and sealed idiom
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definitively
adverb uk/dɪˈfɪn.ɪ.tɪv.li/us/dɪˈfɪn.ə.t̬ɪv.li/