definitive
[adjective]
Synonyms:
- final, absolute, complete, conclusive, decisive
- authoritative, exhaustive, perfect, reliable, ultimate

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Antonyms: provisional, tentative, indefinitive
Contrasted words: inconclusive, indecisive, temporary, transitory, doubtful, dubious, questionable, ambiguous
Related Words: determining, settling, concluding, final, last, terminal, ultimate, closing, completing, ending, finishing, terminating, absolute, categorical, actual, real

[TahlilGaran] English Synonym Dictionary ▲

de‧fin‧i‧tive AC /dɪˈfɪnətɪv, dɪˈfɪnɪtɪv/ adjective

1. [usually before noun] a definitive book, description etc is considered to be the best and cannot be improved
definitive study/work/guide etc
the definitive study of Victorian railway stations

2. a definitive agreement, statement etc is one that will not be changed:
a definitive agreement to buy the company
—definitively adverb

[TahlilGaran] Dictionary of Contemporary English ▲