Not to be placated or appeased or moved by entreaty:
— Grim determination.
— Grim necessity.

synonyms: inexorable, relentless, stern, unappeasable, unforgiving, unrelenting.

Roget 895: discourteous, uncourteous^†; uncourtly^†; ill-bred, ill-mannered, ill-behaved, ill-conditioned; unbred; unmannerly, unmannered; impolite, unpolite^†; unpolished, uncivilized, ungenteel; ungentleman-like, ungentlemanly; unladylike; blackguard; vulgar etc. 851; dedecorous^†; foul-mouthed foul-spoken; abusive.    uncivil, ungracious, unceremonious; cool; pert, forward, obtrusive, impudent, rude, saucy, precocious.    repulsive; uncomplaisant^†, unaccommodating, unneighborly, ungallant; inaffable^†; ungentle, ungainly; rough, rugged, bluff, blunt, gruff; churlish, boorish, bearish; brutal, brusque; stern, harsh, austere; cavalier.    taint, sour, crabbed, sharp, short, trenchant, sarcastic, biting, doggish, caustic, virulent, bitter, acrimonious, venomous, contumelious; snarling etc. v.; surly, surly as a bear; perverse; grim, sullen etc. 901.1; peevish etc. (irascible) 901.    untactful, impolitic, undiplomatic; artless etc. 703; ... show more

Roget 901a: sullen, sulky; ill-tempered, ill-humored, ill-affected, ill-disposed; grouty [U.S.]; in an ill temper, in a bad temper, in a shocking temper, in an ill humor, in a bad humor, in a shocking humor; out of temper, out of humor; knaggy^†, torvous^†, crusty, crabbed; sour, sour as a crab; surly etc. (discourteous) 895.    moody; spleenish^†, spleenly^†; splenetic, cankered.    cross, crossgrained^†; perverse, wayward, humorsome^†; restiff^†, restive; cantankerous, intractable, exceptious^†, sinistrous^†, deaf to reason, unaccommodating, rusty, froward; cussed [U.S.].    dogged etc. (stubborn) 606.    grumpy, glum, grim, grum^†, morose, frumpish; in the sulks etc. n.; out of sorts; scowling, glowering, growling; grouchy.    peevish etc. (irascible) 901.    ... show more

Shockingly repellent; inspiring horror:
— The grim aftermath of the bombing.
— The grim task of burying the victims.

synonyms: ghastly, grisly, gruesome, macabre, sick.

Roget 846: ugly, ugly as sin, ugly as a toad, ugly as a scarecrow, ugly as a dead monkey; plain, bald (unadorned) 849; homely; ordinary, unornamental^†, inartistic; unsightly, unseemly, uncomely, unlovely; unshapely; sightless, seemless^†; not fit to be seen; unbeauteous^†, unbeautiful; beautiless^†, semibeautiful; shapeless etc. (amorphous) 241.    misshapen, misproportioned^†; monstrous; gaunt etc. (thin) 203; dumpy etc. (short) 201; curtailed of its fair proportions; ill-made, ill-shaped, ill-proportioned; crooked etc. (distorted) 243; hard featured, hard visaged; ill-favored, hard-favored, evil-favored; ill-looking; unprepossessing, unattractive, uninviting, unpleasing.    graceless, inelegant; ungraceful, ungainly, uncouth, stiff; rugged, rough, gross, rude, awkward, clumsy, slouching, rickety; gawky; lumping, lumpish^†; lumbering; hulky^†, hulking; unwieldy.    squalid, haggard; grim, grim faced, grim visaged; grisly, ghastly; ghost like, death like; cadaverous, grewsome^†, gruesome.    frightful, hideous, odious, uncanny, forbidding; repellant, repulsive, repugnant, grotesque, bizarre; grody [Coll.], grody to the max [Coll.]; horrid, horrible; shocking etc. (painful) 830.    foul etc. (dirty) 653; dingy etc. (colorless) 429; gaudy etc. (color) 428; disfigured etc. v.; discolored.    ... show more

Harshly ironic or sinister:
— A grim joke.
— Grim laughter.

synonyms: black, mordant.

Harshly uninviting or formidable in manner or appearance:
— A grim man loving duty more than humanity.
— Undoubtedly the grimmest part of him was his iron claw.

synonyms: dour, forbidding.

Filled with melancholy and despondency:
— Took a grim view of the economy.

synonyms: blue, depressed, dispirited, down, down in the mouth, downcast, downhearted, gloomy, low, low-spirited.

Polish: posępny, chmurny, ponury

Causing dejection:
— Grim rainy weather.

synonyms: blue, dark, dingy, disconsolate, dismal, drab, drear, dreary, gloomy, sorry.

Roget 830: causing pain, hurting etc. v.; hurtful etc. (bad) 649; painful; dolorific^†, dolorous; unpleasant; unpleasing, displeasing; disagreeable, unpalatable, bitter, distasteful; uninviting; unwelcome; undesirable, undesired; obnoxious; unacceptable, unpopular, thankless.    unsatisfactory, untoward, unlucky, uncomfortable.    distressing; afflicting, afflictive; joyless, cheerless, comfortless; dismal, disheartening; depressing, depressive; dreary, melancholy, grievous, piteous; woeful, rueful, mournful, deplorable, pitiable, lamentable; sad, affecting, touching, pathetic.    irritating, provoking, stinging, annoying, aggravating, mortifying, galling; unaccommodating, invidious, vexatious; troublesome, tiresome, irksome, wearisome; plaguing, plaguy^†; awkward.    importunate; teasing, pestering, bothering, harassing, worrying, tormenting, carking.    intolerable, insufferable, insupportable; unbearable, unendurable; past bearing; not to be borne, not to be endured; more than flesh and blood can bear; enough to drive one mad, enough to provoke a saint, enough to make a parson swear, enough to gag a maggot.    shocking, terrific, grim, appalling, crushing; dreadful, fearful, frightful; thrilling, tremendous, dire; heart-breaking, heart-rending, heart-wounding, heart-corroding, heart-sickening; harrowing, rending.    odious, hateful, execrable, repulsive, repellent, abhorrent; horrid, horrible, horrific, horrifying; offensive.    nauseous, nauseating; disgusting, sickening, revolting; nasty; loathsome, loathful^†; fulsome; vile etc. (bad) 649; hideous etc. 846.    sharp, acute, sore, severe, grave, hard, harsh, cruel, biting, caustic; cutting, corroding, consuming, racking, excruciating, searching, grinding, grating, agonizing; envenomed; catheretic^†, pyrotic [Med.].    ruinous, disastrous, calamitous, tragical; desolating, withering; burdensome, onerous, oppressive; cumbrous, cumbersome.    ... show more

Roget 837: cheerless, joyless, spiritless; uncheerful, uncheery^†; unlively^†; unhappy etc. 828; melancholy, dismal, somber, dark, gloomy, triste [Fr.], clouded, murky, lowering, frowning, lugubrious, funereal, mournful, lamentable, dreadful.    dreary, flat; dull, dull as a beetle, dull as ditchwater^†; depressing etc. v.. melancholy as a gib cat;" oppressed with melancholy, a prey to melancholy; downcast, downhearted; down in the mouth, down in one's luck; heavy-hearted; in the dumps, down in the dumps, in the suds, in the sulks, in the doldrums; in doleful dumps, in bad humor; sullen; mumpish^†, dumpish, mopish^†, moping; moody, glum; sulky etc. (discontented) 832; out of sorts, out of humor, out of heart, out of spirits; ill at ease, low spirited, in low spirits, a cup too low; weary etc. 841; discouraged, disheartened; desponding; chapfallen^†, chopfallen^†, jaw fallen, crest fallen.    sad, pensive, penseroso [It], tristful^†; dolesome^†, doleful; woebegone; lacrymose, lachrymose, in tears, melancholic, hypped^†, hypochondriacal, bilious, jaundiced, atrabilious^†, saturnine, splenetic; lackadaisical.    serious, sedate, staid, stayed; grave as a judge, grave as an undertaker, grave as a mustard pot; sober, sober as a judge, solemn, demure; grim; grim-faced, grim-visaged; rueful, wan, long-faced.    disconsolate; unconsolable, inconsolable; forlorn, comfortless, desolate, desole [Fr.], sick at heart; soul sick, heart sick; au desespoir [Fr.]; in despair etc. 859; lost.    overcome; broken down, borne down, bowed down; heartstricken etc. (mental suffering) 828^†; cut up, dashed, sunk; unnerved, unmanned; down fallen, downtrodden; broken-hearted; careworn.    ... show more

Polish: mroczny