Synonyms of unmelodious

1 Syllable

hard, bleak, sharp, sour, harsh, flat, grim, rough, dry

2 Syllables

jangling, coarse, craggy, rusty, grating, scratchier, jagged, rugged, off-key, harshest, clashing, glaring, harsher, rasping, raspy, rigid, strident, cracked, acrid, jarring, scratchy, hoarse, raucous, noisy, bitter, creaking, squawky, croaking, screeching

3 Syllables

asperous, disturbing, unlevel, guttural, disagreeing, uneven, stridulous, severe, astringent, earsplitting, discordant, contrarient, out-of-key, out-of-tune, tuneless, dissonant

4 Syllables

unrelenting, cacophonic, inharmonic, cacophonous, caterwauling, unharmonious, unmusical

5 Syllables

incompatible