Synonyms of fine tune

Verb

1. polish, refine, fine-tune, down, better, improve, amend, ameliorate, meliorate

usage: improve or perfect by pruning or polishing; "refine one's style of writing"

2. fine-tune, tweak, tune, tune up

usage: adjust finely; "fine-tune the engine"

3. calibrate, graduate, fine-tune, adjust, set, correct

usage: make fine adjustments or divide into marked intervals for optimal measuring; "calibrate an instrument"; "graduate a cylinder"