forbidding

alarming, dire, direful, dread, dreadful, fearsome, forbidding, formidable, frightening, frightful, ghastly, hair-raising, horrendous, horrible, horrifying, intimidating, redoubtable, scary, shocking, spine-chilling, terrible, terrifying

daunting, demoralizing, disconcerting, discouraging, dismaying, disquieting, distressing, disturbing, perturbing, startling, threatening, troubling, trying, unnerving; bone-chilling, creepy, eerie ( eery), weird; appalling, atrocious, awful, grisly, gruesome ( grewsome), hideous, horrid, macabre, monstrous, nightmarish

calming, comforting, consoling, inviting, lulling, pacifying, quieting, reassuring, relaxing, soothing, tranquilizing ( tranquillizing); nonintimidating, nonthreatening

austere, dour, fierce, flinty, forbidding, gruff, intimidating, lowering ( louring), rough, rugged, severe, stark, steely, stern, ungentle

bleak, cold, hostile, inhospitable, inimical, unfriendly, unsympathetic; adamant, bound, determined, firm, intent, purposeful, resolute, resolved, steadfast, unflinching; fixed, hard, hardened, hardheaded, immovable, implacable, inflexible, ironhanded, mulish, obdurate, obstinate, rigid, self-willed, set, stiff, stubborn, unbending, uncompromising, unrelenting, unyielding, willful ( wilful); immutable, unchangeable; black, cheerless, dark, gloomy, glum, joyless, melancholic, moody, morose, sulky, sullen, surly; brooding, grave, humorless, melancholy, serious, sober, sobersided, solemn, somber ( sombre), staid, unsmiling, weighty

bland, meek, mellow, soft, soothing; easy, quiet, tranquil; agreeable, bright, cheerful, inviting, pleasant, pleasing, sweet; glad, happy, lighthearted, merry, mirthful, sunny; featherbrained, flighty, frivolous, giddy, goofy, harebrained, light-headed, playful, scatterbrained, silly