MeanOF

definitely

- adverb (adv)

Meaning: certainly

Synonyms: absolutely beyond any doubt categorically clearly decidedly doubtless doubtlessly easily explicitly expressly far and away finally indubitably no ifs ands or buts about it obviously plainly positively specifically surely undeniably unequivocally unmistakably unquestionably without doubt without fail without question
Antonyms: doubtfully dubiously indefinitely questionably

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.