Faustianism, acerbity, acidity, acidulousness, acridity, acridness, acrimony, anger, animosity, animus, asperity, astringence, astringency, atonalism, atonality, bad blood, bad humor, bad temper, bile, biliousness, bitingness, bitter feeling, bitter pill, bitterness, cacophony, causticity, choler, clinker, cold comfort, corrosiveness, cuttingness, disappointment, discontent, discontentedness, discontentment, discord, discordance, discordancy, disgruntlement, disharmony, dissatisfaction, dissatisfiedness, dissonance, dissonancy, dissonant chord, divine discontent, edge, envy, feud, flatness, gall, gall and wormwood, hard feelings, harshness, ill blood, ill feeling, ill humor, ill nature, ill temper, ill will, inharmoniousness, inharmony, keenness, mordancy, off note, peevishness, petulance, piquancy, poignancy, pungency, querulousness, rancor, rebelliousness, resentment, restiveness, restlessness, roughness, severity, sharpness, soreness, sour note, spleen, stridor, sulkiness, tartness, trenchancy, tunelessness, uneasiness, unfulfillment, unhappiness, unharmoniousness, unmusicality, unpleasure, unsatisfaction, untunefulness, vendetta, venom, vexation of spirit, virulence, vitriol, wolf