absolutely

Synonyms: actually categorically come hell or high water conclusively decidedly decisively definitely doubtless easily exactly for sure no ifs ands or buts no strings attached on the button on the money on the nose positively precisely really right on straight out sure as can be sure as hell sure enough surely sure thing the very thing truly unambiguously unconditionally unquestionably

Antonyms: doubtful indefinite not certain not sure questionable

Synonyms: completely consummately entirely fully thoroughly utterly wholly

Antonyms: incomplete partially