1. not properly tuned; out of tune
Usage: music

Examples

• The mistuned piano made the recital sound terrible.
• His guitar was mistuned after sitting in the hot car.
• The orchestra’s mistuned instruments created a discordant sound.
• She couldn’t practice properly with her mistuned violin.
• The old radio produced only mistuned static.
• The mistuned bells rang harshly across the town square.