Inelastic rhymes with:
interscholastic, scholastic, elastic, iconoclastic, interscholastic, plastic, scholastic, thermoplastic, bombastic, drastic, dynastic, ecclesiastic, elastic, enthusiastic, fantastic, fantastik, gymnastic, iconoclastic, interscholastic, monastic, onomastic, plastic, sarcastic, scholastic, stochastic, thermoplastic, unenthusiastic