SG Heritage Dictionary

Stridor Roget’s Thesaurus §410

N. creak, creaking, discord, &c. 414, stridor, roughness, sharpness, &c. adj, cacophony, cacoepy, acute note, high note, soprano, treble, tenor, alto, falsetto, penny trumpet, voce di testa

V. creak, grate, jar, burr, pipe, twang, jangle, clank, clink, scream, yelp, buzz, set the teeth on edge, corcher les oreilles, pierce the ears, split the ears, split the head, offend the ear, grate upon the ear, jar upon the ear

Adj. creaking, stridulous, harsh, coarse, hoarse, horrisonous|, rough, gruff, grum, sepulchral, hollow, sharp, high, acute, shrill, trumpet-toned, piercing, ear-piercing, high-pitched, high-toned, cracked, discordant, cacophonous

Discord Roget’s Thesaurus §414

N. discord, discordance, dissonance, cacophony, want of harmony, caterwauling, harshness, babel, dutch concert, cat's concert, marrowbones and cleavers

V. be discordant, jar

Adj. discordant, dissonant, absonant, out of tune, tuneless, unmusical, untunable, unmelodious, immelodious, unharmonious, inharmonious, singsong, cacophonous, harsh, jarring