Added 9 October 2026 definitely /ˈdɛf.ɪ.nɪt.li/ adverb Categories: Describing WordsEveryday Words adverb ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about definitely at Wordnik → Where our words come from → Without question and beyond doubt. it was decidedly too expensive Related Words: decidedlyunquestionablyemphaticallyundoubtedlysurelyindubitablyunambiguouslyunequivocallydoubtlesslyundoubtablyunmistakably Back to today's word