acerbic, asperity, belated, bilious, brusque, cantankerous, chagrin, choleric, disaffected, disaffection, discontent, disenchant, disenchanted, disenchantment, dishearten, disillusioned, dismay, disquiet, dystopia, estrange, estrangement, flabbergast, frustrated, irascible, jaded, peevish, pessimism, petulant, rift, stagnant, stultify, vexed, waspish