Synonyms to tiring

arduous, Herculean, abrupt, abstruse, backbreaking, brutal, burdensome, complex, critical, crushing, delicate, demanding, difficile, difficult, effortful, energetic, exacting, exhausting, fatiguing, forced, formidable, grueling, hairy, hard, heavy, hefty, intricate, jawbreaking, killing, knotted, knotty, labored, laborious, mean, no picnic, not easy, onerous, operose, oppressive, painful, precipitate, precipitous, punishing, rigorous, rough, rugged, set with thorns, severe, sheer, sideling, spiny, steep, stickle, strained, strenuous, taxing, thorny, ticklish, toilsome, tough, tricksy, tricky, troublesome, trying, uphill, vigorous, wearisome, wicked, boring, acupunctuation, acupuncture, arid, bore, boresome, broach, dead, drab, dreary, drill hole, drudging, dry, dull, empiercement, fixing, flat, goring, gray, humdrum, impalement, irksome, lancing, long-drawn-out, monotonous, penetration, perforation, piercing, pricking, prolix, punching, puncture, puncturing, repetitious, repetitive, same, samely, skewering, soporific, stale, stupefyingly boring, stuporific, tedious, terebration, tired, tireso