(idiomatic, transitive, intransitive) To stop paying attention to; to ignore; to zone out. / To change the channel or frequency away from.

(idiomatic) To produce music, especially to sing, with accurate relative pitch.

(colloquial, humorous) Loony, crazy, insane person.

(colloquial, humorous) Loony, crazy, insane.

(transitive) To make small adjustments to (something) until it is optimal.

(transitive) To make adjustments (to an engine or bicycle drivetrain) in order to improve its performance. / (intransitive) To make preparations for vigorous exercise; to warm up.

A series of adjustments to an engine in order to improve its performance / A series of preparations for vigorous exercise; a warm-up

(music, broadcasting) The tune that opens and/or closes a radio or television programme.

Third-person singular simple present indicative form of tune out

simple past tense and past participle of tune out