fine-tune

1. Improve or perfect by pruning or polishing (synset 200474948)
   "refine one's style of writing"
   is a type of: ameliorate, amend, better, improve, meliorate - to make better
   subtypes:

   • over-refine, overrefine - refine too much or with excess of subtlety
   • civilise, civilize, cultivate, educate, school, train - teach or refine to be discriminative in taste or judgment
   same as: down, polish, refine
2. Adjust finely (synset 200303544)
   "fine-tune the engine"
   is a type of: tune, tune up - adjust for (better) functioning
   same as: tweak
3. Make fine adjustments or divide into marked intervals for optimal measuring (synset 200296478)
   "calibrate an instrument"; "graduate a cylinder"
   is a type of: adjust, correct, set - alter or regulate so as to achieve accuracy or conform to a standard
   same as: calibrate, graduate

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