1. to tune incorrectly or badly
Usage: third person singular present

Examples

• The piano tuner mistunes the instrument when he’s in a hurry.
• She mistunes her guitar before every performance due to nervousness.
• The old radio mistunes itself whenever the weather changes.
• He always mistunes the violin strings when he’s learning new pieces.
• The mechanic mistunes the engine, causing it to run poorly.
• The sound engineer mistunes the audio equipment during setup.