Synonyms to polysyllabic

jawbreaking, Herculean, abstruse, arduous, brutal, complex, critical, delicate, demanding, difficile, difficult, exacting, formidable, hairy, hard, hard-earned, hard-fought, intricate, knotted, knotty, laborious, mean, no picnic, not easy, operose, rigorous, rough, rugged, sesquipedal, sesquipedalian, set with thorns, severe, spiny, steep, strenuous, thorny, ticklish, toilsome, tough, tricky, uphill, wicked, Latinate, a mile long, awkward, bombastic, cramped, cumbrous, elephantine, extensive, far-flung, far-reaching, fargoing, forced, formal, grandiloquence, guinde, halting, hard word, heavy, inkhorn, interminable, jawbreaker, labored, leaden, lengthy, lexiphanicism, long, long word, longish, longsome, lumbering, no end of, polysyllable, pompous, ponderous, stiff, stilted, tall, turgid, unwieldy, without end