cacophonous Play adjectiveInvolving or producing a harsh, discordant mixture of sounds. SYNONYMS absonantblaringboomingdeafeningdiscordantdissonantear-splittinggratingharshhorrisonantinharmoniousjanglingjarringloudnoisyraucousscreechingscreechystridentthunderoustunelessunmelodiousunmusical