hard on Definition

arduous, bad, big, challenging, complicated, difficult, difficulties, difficulty, disk, easy, erect, harder, hardware, harsh, hit, long, near, picky, rigid, rock-hard, rough, severe, severely, solid, steely, stern, stiff, stonelike, stony, toilsome, tough, tricky, version, very, work, adamant, alee, blurry, both, cider, copies, core, currency, diamond, die, durous, enough, faint, figure, flinty, form, hardshell, hazy, how, hurts, impermeable, labour, lasts, liquor, misty, nigh, nosed, obdurate, roe, sclero-, study, teeny, think, times, tiny, too, toughie, vig, wee, yes, active, actively, adversely, affected, against, aggressively, ambitious, anthracite, assiduous, assiduously, avid, awful, awkward, back, badly, baffling, bismuth, bitter, bitterly, blunt, break, brick, brutal, brutally, burdensome,