ascending, rising, mounting, climbing, skyward, upward, acclivitous, upsloping, acclivous, up, uprising, sloping upward, toward summit, upwards, ascendant, ascensional, ascensive, heavenward, assurgent, anabatic, antrorse, soaring, spiraling, ascendent, spiralling, moving up, upwardly mobile, ethereal, Heavenwards, heavenwards, hard, arduous, difficult, tough, demanding, strenuous, laborious, exacting, gruelling, challenging, taxing, rigorous, heavy, grueling, toilsome, formidable, onerous, trying, testing, tiring … more