Synonyms for Rude:

adj.

barbarian (adjective)
inhuman.
bawdy (adjective)
indecent.
brutal (adjective)
brutal, cruel, barbarous, gross, rough, ferocious, inhuman, carnal, savage, coarse, brutish, bestial, ruthless.
crude, primitive (adjective)
green, fresh, uncultivated, inexpert, rough, inelegant.
discourteous (adjective)
brash, caddish, disrespectful, vulgar, ungracious, harsh, brutish, discourteous, uncouth, impertinent, uncivilized, ill-mannered, barbarous, uncivil, contemptuous, coarse, tactless, crude, impolite.
disrespectful (adjective)
saucy.
disrespectful, rough (adjective)
coarse, insulting, crabbed, brusque, brutish, discourteous, obscene, churlish, ungracious, scurrilous, uncultured, barbaric, uncouth, low, barbarous, unrefined, impudent, gross, illiterate, crude, surly, graceless, insolent, impolite, abrupt, loutish, boorish, wild, uncivilized, gruff, curt, vulgar, uncivil, raw, impertinent, uneducated, short, ignorant, savage, unpolished, cheeky, intrusive, abusive.
inelegant (adjective)
gross, awkward, undignified, tasteless, crude, raw, vulgar, earthy, tactless, gawky, barbarous, clumsy, brutish, tawdry, coarse, uncivil, unpolished, unrefined, graceless, inelegant, boorish.
insolent (adjective)
contemptuous, impolite, derisive, brash, flagrant, arrogant, discourteous, sacrilegious, disrespectful, outrageous, irreverent, impertinent, audacious, bold, defiant, callous, brazen, cheeky, insubordinate, insolent, sarcastic, presumptuous, candid, outspoken, mouthy, contumelious, saucy.
loud (adjective)
tawdry.
low (adjective)
undignified.
nervy (adjective)
nervy.
offensive (adjective)
offensive.
ridiculing (adjective)
derisive.
sassy (adjective)
mouthy.
self-confident (adjective)
presumptuous.
short (adjective)
short.
sudden; approximate (adjective)
harsh, stormy, violent, sharp, turbulent.
untamed (adjective)
wild.
vulgar (adjective)
crass, crude, brazen, broad, animal, boorish, homespun, indelicate, coarse-grained, base, chintzy, inelegant, ignominious, raw, undignified, glaring, coarse, tawdry, idiomatic, clumsy, repulsive, tasteless, in bad taste, sordid, profane, scandalous, depraved, unrefined, sleazy, cheap, brutish, unpolished, philistine, degraded, barnyard, earthy, rough, cockney, rank, graceless, ill-bred, shameless, offensive, ignoble, unseemly, gross, common, salty, outlandish, obscene, barbaric, tactless, revolting, low, colloquial, vulgar, garish, unbecoming, gaudy.

n.

abrasive, smart. mundane, ignorant, ordinary, standard, normal, routine, unexceptional, nondescript, everyday, unremarkable, commonplace. wild, culture, uncultivated, uncultured. good. cacophonous, agree, inharmonic, discordant, unmusical, inharmonious, dissonant, disharmonious, unharmonious. approximate (noun)
approximate.
boorish (noun)
gauche, uncultured, unacquainted, ribald, illiterate, hayseed, untaught, disgraceful, uncultivated, hulking, green, rustic, antic, disorderly, unknowing, untrained, urbane, indecent, lumbering, cultured, lubberly, unenlightened, slovenly, inappropriate, uneducated, rugged, ungainly, lumpish, rowdy, loutish, ignorant, homely, indecorous, inexpert, ungraceful.
coarse (noun)
ill-proportioned.
harsh (noun)
turbulent, stormy, violent.

Other synonyms:

nervy, indecent, disagreeable, uncultured, inappropriate, inharmonic, mocking, sassy, disharmonious, surly, abusive, unmusical, abrasive, gauche. dissonant, truculent, unharmonious, scornful, uncultivated. inharmonious, cacophonous, loud. discordant. wild. abusive
insulting.
bold
forward, pert.
brazen
brassy.
brusque
gruff.
bungling
loutish.
clumsy
lubberly, ungainly.
coarse
indecorous.
cross
crusty.
crude
ungentlemanly.
curt
snippy.
forward
impudent.
impudent
barefaced, fresh, snotty, flippant, smart.
inconsiderate
shabby, unkind.
interfering
intrusive, officious.
riotous
turbulent.
surly
churlish.
unpleasant
ungracious.
Other relevant words:
ignorant, lumpish, straight, hard, meddlesome, scurrilous, surly, violent, disparaging, untrained, vituperative, truculent, homely, approximate, dissonant, crabbed, brassy, smart, flippant, hostile, bad-tempered, impudent, barefaced, ungraceful, ribald, snippy, green, snotty, uneducated, abrupt, scornful, short, pert, gruff, crusty, unkind, rugged, illiterate, nasty, lumbering, uncultured, shabby, insensitive, ungentlemanly, flip, abusive, wild, forward, curt, turbulent, stormy, uncalled-for, rowdy, ill-tempered, brusque, intrusive, disagreeable, harsh, sullen, improper, inharmonic, rustic, unabashed, untaught, uncultivated, discordant, acrimonious, contumelious, severe, cacophonous, fresh, loutish, commonplace, unharmonious, sharp, hulking, insulting, sour, snappish, unmusical, disharmonious, inharmonious, gauche, indecent, inexpert, ungracious, loud, nervy, inappropriate, overbearing, naughty, indecorous, sassy, mocking, supercilious, disgraceful, ordinary, ungainly, officious, churlish.

Usage examples for rude

  1. " I did not mean to be rude – What's Mine's Mine V1 by George MacDonald
  2. You know how rude he was to poor Mr. Ready this very afternoon!" – Dead Men Tell No Tales by E. W. Hornung
  3. I can't help him coming; and I can't be rude to the young man. – The Spinners by Eden Phillpotts