Used less than normal or desirable.
Used in an incorrect or inappropriate manner.
‘The oft misused word didn't mean what he thought it meant, but everyone else misunderstood it too.’;
simple past tense and past participle of underuse
simple past tense and past participle of misuse
used incorrectly or carelessly or for an improper purpose;
‘misused words are often laughable but one weeps for misused talents’;