detuned

Verb

detune (third-person singular simple present detunes, present participle detuning, simple past and past participle detuned)

1. To intentionally lower or raise the pitch produced by a musical instrument, often to produce sounds not normally possible, or to reduce tension in a stringed instrument for the purpose of shipping or maintenance.
   • Some avant-garde composers request that performers detune their instruments before playing.

   Synonyms:

   untune

2. To alter the resonant frequency of a tuned system so that it is slightly different from a specified target frequency.