Synonyms for Definitely:

adv.

absolutely (adverb)
completely, indubitably, positively, perfectly, unequivocally, conclusively, surely, unqualifiedly, Consummately, utterly, categorically, unrestrictedly, absolutely, supremely, unconditionally, certainly.
affirmatively (adverb)
assertively, Declaratively.
categorically (adverb)
flatly, denominationally, undeniably, typically.
certainly (adverb)
assuredly, unquestionably, indisputably, Doubtlessly, undeniably, unequivocally, specifically, indubitably, irrefragably, decidedly, surely, incontrovertibly, incontestably, absolutely, veritably, obviously, positively, undoubtedly, unmistakably, trustingly, steadfastly, irrefutably, categorically, plainly, clearly.
flatly (adverb)
flatly.
of course (adverb)
naturally.
positively (adverb)
constructively, beneficially, Affirmatively, optimistically.
precisely (adverb)
accurately, precisely, strictly, properly, correctly, exactly, meticulously.
specially (adverb)
peculiarly, specially, characteristically, individually, especially, specifically, particularly, differently.
truly (adverb)
axiomatically, truly, rightly, factually, honestly, authentically.

adv

absolutely (adverb)
completely, indubitably, positively, perfectly, unequivocally, conclusively, surely, unqualifiedly, Consummately, utterly, categorically, unrestrictedly, absolutely, supremely, unconditionally, certainly.
affirmatively (adverb)
assertively, surely, Declaratively, Affirmatively, categorically, certainly, positively.
categorically (adverb)
flatly, typically, surely, unequivocally, indubitably, unconditionally, absolutely, certainly, unqualifiedly, categorically, denominationally, undeniably.
certainly (adverb)
surely, indisputably, unquestionably, positively, veritably, indubitably, trustingly, certainly, assuredly, unequivocally, absolutely, irrefragably, steadfastly, incontestably, irrefutably, Doubtlessly, undoubtedly, obviously, undeniably, clearly, plainly, incontrovertibly.
of course (adverb)
by all means.
positively (adverb)
absolutely, positively, indisputably, Affirmatively, beneficially, constructively, optimistically.
precisely (adverb)
properly, rightly, accurately, meticulously, exactly, strictly, precisely, correctly.
specially (adverb)
especially, differently, peculiarly, particularly, specially, specifically, individually, precisely, characteristically.
truly (adverb)
axiomatically, authentically, honestly, factually, truly, veritably, certainly, rightly, absolutely.
unmistakably (adverb)
obviously.
without doubt (adverb)
surely.

n.

definite, certain, objective, firm, true, undeniable, factual, realistic, authentic. I don't mind if I do, that's right, by all means, yes, of course, you're on, uh-huh, naturally. clearly (noun)
unmistakably.
definitely (noun)
emphatically, decidedly, in spades, unquestionably, by all odds.

Other synonyms:

factual, uh-huh, undeniable, objective, true, definite. certain, naturally. yes, firm, of course. Other relevant words:
by all odds, of course, decidedly, factual, naturally, assuredly, emphatically, uh-huh, yes, true, certain, in spades, unmistakably, by all means.

Usage examples for definitely

  1. There was but one way of definitely answering that question. – The Black Robe by Wilkie Collins
  2. When Jephthah abandoned those stony fields for Judith's more productive acres, he definitely turned his own back upon this feature, but Blatch Turrentine revived the illegal activities and enlisted the old man's boys in them. – Judith of the Cumberlands by Alice MacGowan