Synonyms of heftier

1 Syllable

fat, strong

2 Syllables

heavy, large, strapping, awkward, major, brawny, beefy, burly, husky, weighty, thumping, ample, sturdy, hulking, robust

3 Syllables

tremendous, unwieldy, muscular, sizable, vigorous, ponderous, powerful, colossal, substantial, massive, forceful

4 Syllables

cumbersome, large-scale, extensive