Synonyms for Irascible:

adj.

all (adjective)
choleric.
angry (adjective)
huffy.
crabby (adjective)
fractious, hot-tempered, petulant, snappish, choleric, cantankerous, crabbed, bearish, quick-tempered, angry, peevish, huffy, touchy, cranky, cross, querulous, irritable, grouchy, surly, short-tempered, testy.
excitable (adjective)
temperamental.
ill-tempered (adjective)
crabbed.
irritable (adjective)
crabbed, choleric, huffy, bitter, petty, cross, churlish, prickly, petulant, crabby, cranky, tart, peevish, cantankerous, acrimonious, snappish, bellicose, crusty, spiteful, ill-tempered, touchy, caustic, sour, acid, irritable, surly, bearish, acerbic.
short (adjective)
short.
sullen (adjective)
glum, scowling, morose, cynical, petulant, cantankerous, frowning, malevolent, surly, obstinate, unfriendly, dour, grim, cross, long-faced, sulky, hostile, melancholy, grouchy, dark, sullen, fretful, dejected, mean, unsociable, broody, ungenial, beetle-browed, contrary, uncooperative, Moping, noncooperative, crabby, moody, sour, grumpy, dissociable, gloomy, glowering.
testy (adjective)
tetchy.

n.

sensitive, fractious, temperamental. ill-tempered, attitude, bad-tempered, testy, nasty, snappy, disagreeable, ugly, querulous, waspish. peppery, feelings, tetchy. irascible (noun)
angry, quick-tempered, short-tempered, choleric, ill-natured, hotheaded, hot-tempered, short.
peevish (noun)
study at irritable.

Other synonyms:

bad-tempered, tetchy. ill-tempered, fractious, waspish, testy, temperamental. peppery. disagreeable. snappy. ugly. nasty. fretful
querulous.
Other relevant words:
hotheaded, feelings, ill-natured, attitude, bad-tempered, quick-tempered, testy, short-tempered, ill-tempered, hot-tempered, choleric, short, snappy, sensitive, peppery, nasty, tetchy, ugly, disagreeable, waspish, temperamental, fractious, angry, querulous.

Usage examples for irascible

  1. An irascible voice, in clear, crisp accents came down. – Death Points a Finger by Will Levinrew