misfinger

verb4

1. •
   To make a mistake in the finger positions when playing an instrument, resulting in a wrong note.

   • If Holmes misfingers a note on one of the violin strings, that is merely some small fault within the unified organisation of Sherlock Holmes and Dr. Watson Incorporated. — 2000
2. •
   To misplace the hands or fingers when typing, resulting in errors in the resulting text.

   • Each one watched the one at the machine and didn't allow any misfingering. Very quickly they learned the touch method for the middle row. — 1959
3. •
   To fumble or place something incorrectly due to poor coordination of the fingers.

   • DUKE: Alas! Methinks I have misfinger'd it! FERDINAND: Sire, bend thou down thine aged frame And do thou smartly pluck it up again. — 2007
4. •
   To unthinkingly or accidentally touch someone or something one should not.

   • The causes? Overconfidence? Misfingering? Disbelief that anything serious could happen, by that opponent, so early? — 1966