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Verb: fine-tune  'fIn,t(y)oon
  1. Improve or perfect by pruning or polishing
    "fine-tune one's style of writing";
    - polish, refine, down [informal]
  2. Adjust finely
    "fine-tune the engine";
    - tweak
  3. Make fine adjustments or divide into marked intervals for optimal measuring
    "fine-tune an instrument";
    - calibrate, graduate

Derived forms: fine-tuning, fine-tunes, fine-tuned

Type of: adjust, ameliorate, amend, better, correct, improve, meliorate, mend, set, tune, tune up