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.

That is formidable, but this book is meant to be definitive, and it succeeds in accomplishing that.

From Salon • Apr. 14, 2026

However, the data is limited and not definitive.

From Science Daily • Apr. 12, 2026

The independent directors have retained law firm Munger, Tolles & Olson LLP, which has brought on AlixPartners as an independent consultant, and there is no definitive timetable for the investigation.

From Barron's • Apr. 8, 2026

Some are staying on the sidelines, waiting for a concrete development or a definitive end to the war before committing to a major trade.

From The Wall Street Journal • Apr. 7, 2026

Without definitive documentary evidence of particular sources we may never know if this research included tribal melodies he later passed off as his own.

From "The Story of Music" by Howard Goodall

Vocabulary lists containing definitive

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G.1: Principles of Geography (Sources 1–14)

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Extremely Loud and Incredibly Close

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