Synonyms of harshest

1 Syllable

hard, bleak, sharp, sour, flat, grim

2 Syllables

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

3 Syllables

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

4 Syllables

unrelenting, unmusical, cacophonous, caterwauling, unmelodious

5 Syllables

incompatible