Антонимом acting gently

roughly loudly brightly audibly harshly crudely bluntly rudely firmly discourteously curtly brazenly contemptuously crassly disrespectfully gratingly imprudently powerfully coarsely insolently ungraciously grimly vulgarly brutally barbarously boorishly

unkindly horridly meanly nastily callously cruelly wickedly harshly heartlessly hurtfully disagreeably brutally unmercifully ferociously ill sadistically unpleasantly pitilessly savagely badly barbarously ruthlessly brutishly spitefully mercilessly viciously cold-bloodedly wildly dissenting unwillingly ferally unmanageably uncontrolledly uncontrollably roughly aggressively surlily abusively crudely antagonistically offensively crassly rudely hardly obnoxiously foully hostilely insolently unfriendlily violently belligerently threateningly hatefully rowdily bellicosely barbarically domineeringly churlishly agitatedly inhumanly severely bearishly hardheartedly injuriously inconsiderately brusquely loudly loutishly cold-heartedly disparagingly unhappily discourteously irritably uncompassionately unfeelingly unsympathetically troubledly insensitively derisively excitedly uncaringly gruffly

heavily firmly forcefully hard harshly agitatedly coarsely roughly troubledly callously caustically abrasively gruffly crudely scathingly powerfully sternly ungently severely fiercely hardly intemperately oppressively ruggedly turbulently irritatingly grimly inclemently pitilessly tyrannically excitedly intensely heavy-handedly

carelessly

less less and less

abruptly suddenly unexpectedly precipitously unanticipatedly precipitately unceremoniously all of a sudden steeply

quickly fast rapidly hurriedly speedily quick swift swiftly hastily snappily fleetly meteorically posthaste pronto apace briskly expeditiously lickety-split a.s.a.p. hotfoot post-haste as fast as one's legs can carry one at a fast pace at a gallop at breakneck speed at speed at the double flat-out full tilt hell for leather in haste very fast with all possible haste with dispatch at a rate of knots at full speed at high speed like lightning with all speed at full tilt like greased lightning like nobody's business like the clappers as soon as possible at the speed of light

loudly noisily earsplittingly piercingly raucously boisterously boomingly deafeningly roaringly gratingly thunderingly thunderously clamorously clangorously sonorously stridently discordantly vociferously brazenly obstreperously overloudly plangently resoundingly ringingly

ignobly plebeianly ungenteelly unrefinedly unsophisticatedly uncivilly commonly impolitely lowly lowlily ordinarily plainly roughly abasedly boorishly crudely improperly indecorously inelegantly inferiorly knavishly rudely uncouthly ungraciously subordinately vulgarly

acting haughtily acting honestly acting improperly acting in acting in accordance with acting in a polite way acting for acting foolishly acting ethically acting correctly acting cool acting contrite