DictionaryAI

definitely

adverb
DEF-i-nit-lee/ˈdɛf.ɪ.nɪt.li/

2 meanings of definitely

Practice

  1. 1
    certainlyadverb
    Without any question and beyond all doubt; certainly.

    The witness was definitely at the scene when the alarm sounded.

    We are definitely signing the contract once the lawyers approve it.

    UsageSpelled with -ite-: definitely (not incorrect: definately). Usually before the main verb or after be: will definitely sign, is definitely there.

    Similarcertainly, undoubtedly, absolutely, unquestionably, positively

    Oppositepossibly, perhaps

  2. 2
    firmlyadverb
    In a definite, decisive manner; clearly and firmly enough to leave no room for argument.

    Until the test results come back, the doctors cannot definitely rule out an infection.

    The museum has not yet definitely identified the painter, although experts suspect one of his students.

    UsageOften with a negative: cannot definitely say, not yet definitely known.

    Similardecisively, firmly, clearly, emphatically

    Oppositehesitantly, tentatively, vaguely, indecisively

Practice

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Origin

Formed from the adjective "definite" combined with the adverb-forming suffix "-ly."

Checked 5 Nov 2026 · 3 facts