Synonyms and related words :
absonant, acid, acidulous, acrid, acrimonious, astringent, atonal, biting, bitter, blatant, boisterous, cacophonous, caustic, clamorous, cracked, creaking, croaking, cutting, diaphonic, disconsonant, discordant, disharmonic, disharmonious, dissonant, double-edged, edged, escharotic, fierce, flat, grating, gravelly, grinding, guttural, harsh, hoarse, husky, immelodious, incisive, inharmonic, inharmonious, jarring, keen, loud, loudmouthed, mordacious, mordant, multivocal, musicless, nonmelodious, off, off-key, off-tone, openmouthed, out of pitch, out of tone, out of tune, penetrating, piercing, poignant, rasping, raucous, rigorous, rough, scathing, scraping, scratching, scratchy, severe, sharp, shrill, sour, squawky, stabbing, stentorian, stertorous, stinging, strident-voiced, stridulant, stridulous, stringent, tart, trenchant, tuneless, unharmonious, unmelodious, unmusical, untunable, untuned, untuneful, vehement, violent, virulent, vitriolic, vociferant