Hard

adamantine callous compact compacted compressed concentrated consolidated dense firm hardened impenetrable indurate indurated inflexible iron packed rigid rocky set solid stiff stony strong thick tough unyielding

arduous backbreaking bothersome burdensome complicated demanding difficile distressing effortful exacting fatiguing formidable grinding hairy heavy Herculean intricate involved irksome knotty labored laborious mean merciless murder onerous operose rigorous rough rugged scabrous serious severe slavish sticky strenuous terrible tiring toilful toilsome tough troublesome unsparing uphill uphill battle wearing wearisome wearying

acrimonious angry antagonistic austere bitter bleak brutal callous cold cold-blooded cold fish dark disagreeable distressing dour exacting grievous grim hard as nails hard-boiled harsh hostile inclement intemperate intolerable obdurate painful perverse pitiless rancorous resentful rigorous rugged severe stern strict stringent stubborn thick-skinned tough unfeeling unjust unkind unpleasant unrelenting unsparing unsympathetic vengeful

absolute actual bare cold definite down-to-earth genuine plain positive practical pragmatic realistic sure undeniable unvarnished verified

actively angrily animatedly boisterously briskly brutally cruelly earnestly energetically ferociously fiercely forcibly frantically furiously heavily intensely keenly like fury madly meanly painfully powerfully relentlessly rigorously roughly rowdily savagely seriously severely sharply spiritedly sprightly stormily strongly tumultously/tumultuously turbulently uproariously urgently viciously vigorously violently vivaciously wildly with all one’s might

assiduously closely diligently doggedly earnestly exhaustively industriously intensely intensively intently painstakingly persistently searchingly sharply steadily strenuously thoroughly unremittingly untiringly

agonizingly arduously awkwardly badly burdensomely carefully cumbersomely cumbrously distressingly exhaustingly gruelingly hardly harshly inconveniently laboriously painfully ponderously roughly severely strenuously tiredly toilsomely unwieldily vigorously with great effort

bitterly hardly keenly rancorously reluctantly slowly sorely