exactly 5 antonyms and opposites of exactly. Adverb — Precisely, with no approximation or margin of error. Synonyms for exactly exact perfectly correctly dead-nuts definitely directly even fully incisively just jump on target on the button on the dot on the mark on the money on the nose plump plunk precisely punctually right sharp slap slap bang squarely Antonyms for exactly approximately imprecisely inaccurately incorrectly inexactly ← Back to the full definition of exactly