Definitions

definitive

[dih-fin-i-tiv] / dɪˈfɪn ɪ tɪv /

ADJECTIVE

authoritative

Synonyms

STRONGEST

actual categorical clear-cut conclusive decisive definite exhaustive precise reliable specific ultimate unambiguous

WEAK

absolute closing complete completing concluding determining downright ending express final finishing flat out last limiting nailed down perfect plain real settling straight out terminal terminating

Antonyms

STRONGEST

ambiguous false imprecise indefinite inexact questionable uncertain vague

WEAK

incomplete inconclusive interim temporary unreliable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

There’s not really one definitive version of him, said Emily Youree, an assistant professor of English at the University of Louisiana at Lafayette.

From The Wall Street Journal • Jun. 23, 2026

Iran's senior envoys left talks in Switzerland on Monday after a marathon negotiating session with the United States, state media reported, as mediators claimed progress towards a definitive US-Iran deal.

From Barron's • Jun. 22, 2026

"To our knowledge, this review is the most definitive determination that those who vape are at increased risk of cancer compared to those who don't," Prof. Stewart says.

From Science Daily • Jun. 21, 2026

Lebanese President Joseph Aoun welcomed the announcement, saying in a statement that he looked forward to the understandings translating into "practical steps that will put a definitive end to the cycle of violence".

From BBC • Jun. 15, 2026

Thus knowledge, in so far as we have it, is not absolute but progressive, not definitive but provisional.

From "The Invention of Science" by David Wootton

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