Synonyms of herculean

1 Syllable

hard, tough, huge, giant

2 Syllables

massiest, moby, upstream, hard-won, mighty, heroic, strenuous, toilful, bionic, king-size, whaling, well-built, muscled, ropy, massy, massier

3 Syllables

laborious, humungous, cyclopean, pythonic, courageous, difficult, gargantuan, muscular, almighty, titanic, backbreaking, gigantic, vigorous, prodigious, walloping, colossal, forceful

4 Syllables

difficile, super-duper, bunyanesque, gigantesque, mastodonic, superhuman, impressive, larger-than-life

6 Syllables

energy-consuming