off-key

Meaning

1. adjective Above or below the correct note sequence; especially a vocalist out of sync with a separately recorded musical accompaniment
2. adjective Not harmonious, or out of accord.
3. adverb Being an inaccurate note sequence that is either above or below where it is intended to be.

Similar words

sour unharmonious false inharmonious underpitched out-of-time dirty inaccurate improper wide of the mark