23 Moby Thesaurus words for "sour note": atonalism, atonality, cacophony, clinker, discord, discordance, discordancy, disharmony, dissonance, dissonancy, dissonant chord, flatness, inharmoniousness, inharmony, off note, sharpness, sourness, stridor, tunelessness, unharmoniousness, unmusicality, untunefulness, wolf