What is another word for "ponderous"?

Roget's Thesaurus (1911) lists these synonyms for "ponderous": abrupt, affectation, affected, analytical, arroba, artificial, avoirdupois, awkward, baby, balance, ballast, barbarism, barbarous, beam, break, burden, burdensome, burthen, cacophony, carat, centigram, counterpoise, crude, cumber, cumbersome, cumbrous, dislocate, drachma, dry, euphuism, euphuistic, forced, formal, fustian, graceless, grain, gram, gravitate, gravitation, gravity.