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Definitions from the Web

definitive

Part of Speech: Adjective

Sense 1:

Used to describe something that is considered the most authoritative, conclusive, or final.

Sample Sentence: The professor's book on quantum mechanics is widely regarded as the definitive guide in the field.

Sense 2:

Used to describe a statement, decision, or result that is considered unquestionable or undeniable.

Sample Sentence: The judge's ruling is definitive and cannot be appealed.

Part of Speech: Noun

Sense 1:

Referring to a version or edition of a book or document that is considered the most authoritative or comprehensive.

Sample Sentence: The library has a copy of the definitive of Shakespeare's complete works.

Part of Speech: Adverb

Sense 1:

Used to describe an action or behavior done in a manner that is considered authoritative or conclusive.

Sample Sentence: She spoke definitively, leaving no room for doubt.