bitter

disaffected, discontented, disgruntled, malcontent

contemptuous, cynical, disdainful, misanthropic, scornful

angry, cruel, harsh, irritated, mad, rough, savage, vehement, vicious, virulent, vitriolic

acid, caustic, cutting, mordant, sarcastic, trenchant

knock-down, drag-out (or knock-down-and-drag-out)

insufferable, insupportable, intolerable, unacceptable, unbearable, unendurable, unsupportable

appalling, awful, bad, dire, dreadful, ghastly, horrible, miserable, nasty, rotten, severe, terrible, vile, wretched

acute, extreme, intense, piercing

brisk, invigorating, nippy, snappy

needlelike, prickly, tingling

caustic, corrosive

austere, bleak, comfortless, discomforting, forbidding, inhospitable, spartan, uncomfortable

biting, inclement, intemperate, wild

rigorous, strict, stringent

agonizing, heartbreaking, heartrending, painful, wretched

crushing, grinding, overwhelming, wearing

insufferable, insupportable, intolerable, unbearable, unendurable

harrowing, tortuous

bad, disagreeable, hostile, unfriendly, unpleasant

cryogenic, subfreezing, subzero, ultracold

cutting, keen, penetrating, piercing, sharp

bracing, brisk, crisp, invigorating, rigorous

chilled, cooled, frosted, frozen, iced, refrigerated, unheated

bracing, brisk, crisp, invigorating, rigorous, snappy

arctic, bitter, cold, coolish, freezing, frigid, frosty, glacial, ice-cold, icy, numbing, polar, shivery, wintry (also wintery)

subfreezing, subzero

frore, frosted, frozen, iced, refrigerated, unheated

dirgelike, elegiac (also elegiacal), melancholy

dejected, depressed, despondent, disconsolate, dispirited, downcast, downhearted, heartsick, heartsore, inconsolable, tearful

brokenhearted, careworn, crestfallen, downcast, downhearted, forlorn, gloomy, glum, low-spirited, miserable, sad, triste, unhappy, woebegone

bawling, crying, groaning, howling, keening, moaning, yammering

bleeding, suffering

black, bleak, cheerless, comfortless, dark, darkening, desolate, dismal, dreary, funereal, gloomy, glum, gray (also grey), joyless, low, miserable, moody, morbid, morose, pathetic, pessimistic, piteous, saturnine, somber (or sombre), sullen, wretched

abhorrent, abominable, appalling, awful, beastly, bilious, disgusting, dreadful, foul, ghastly, gnarly [slang], god-awful, gross, hateful, hellish, hideous, horrendous, horrible, horrid, invidious, loathsome, nauseating, nauseous, noisome, obnoxious, obscene, odious, offensive, repellent (also repellant), repugnant, repulsive, revolting, revulsive, scandalous, seamy, shocking, sick, sickening, ugly, unholy, vile, villainous

aggravating, annoying, galling, irritating, vexing

crappy [slang], cruddy, crummy (also crumby), lousy, miserable, sucky [slang], wretched