adverb

definitely

definitely, certainly, without doubt

I will definitely be at the party.

I will definitely be at the party.

This is definitely the best pizza.

This is definitely the best pizza.

((auxiliary verb)) definitely ((main verb)) (auxiliary verb) definitely (main verb) You should definitely see that movie.

Synonyms: certainly, absolutely, surely; Antonyms: possibly, maybe, perhaps

From the adjective 'definite' + the adverb-forming suffix '-ly'.

It means 'in a definite way'. Use it when you are sure and there is no doubt.

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