Gentle

Antonyms of gentle:
untamed, intense, steep, lowborn, unkind, loud, heavy, wild, acrimonious, crusty, hateful, ill-tempered, surly, churlish, disagreeable, ill-conditioned, morose, unamiable, crabbed, dogged, ill-humored, sour, unlovely, cruel, gruff, ill-natured, sullen, exquisite, fierce, powerful, severe, forceful, forcible, savage, violent, roughened, rugged, strong, abrading, irritating, roughening, grim, rude, stiff, heavy-handed, oppressive, pitiless, tyrannical, abrasive, caustic, coarse, hard, harsh, rough, scathing, stern, ungentle, blustering, blustery, breezy, gusty, squally, stormy, windy, misty, rainy, showery, bleak, cloudy, dismal, foggy, gloomy, gray, hazy, overcast, sunless, bitter, dirty, foul, nasty, raw, inclement, intemperate, inferior, knavish, bastard, illegitimate, ordinary, plain, abased, degraded, junior, subordinate, baseborn, common, humble, ignoble, low, lower-class, lowly, mean, nonaristocratic, plebeian, ungenteel, brazen, crashing, dinning, discordant, noisy, obstreperous, raucous, rip-roaring, vociferous, grating, shrill, squealing, strident, clarion, clear, trumpetlike, blaring, blasting, booming, clamorous, clangorous, deafening, earsplitting, overloud, piercing, plangent, resounding, ringing, roaring, sonorous, stentorian, thundering, thunderous.
Examples of usage:
  1. But you must come and see our friend; he has been so kind and gentle, and talked a great deal to me.
    "On the Banks of the Amazon", W.H.G. Kingston.
  2. " All her father's ways were gentle and delicate," said Clara.
    "In Luck at Last", Walter Besant.
  3. I want a friend- the Senator of Rome wants a friend- only one friend- gentle Heaven!
    "Rienzi", Edward Bulwer Lytton.