HERCULEAN
herculean
(adjective) extremely difficult; requiring the strength of a Hercules; “a herculean task”
herculean, powerful
(adjective) displaying superhuman strength or power; “herculean exertions”
Source: WordNet® 3.1
Etymology
Adjective
Herculean (comparative more Herculean, superlative most Herculean)
Of extraordinary might, power, size, etc.; suggesting Hercules in size or strength.
Requiring a huge amount of work; of extraordinary difficulty.
Adjective
herculean
Alternative letter-case form of Herculean
Still there are some loop-holes out of which a man may creep, and dare to think and act for himself; but for a woman it is an herculean task, because she has difficulties peculiar to her sex to overcome, which require almost super-human powers.
Source: Wiktionary
Her*cu"le*an, a. Etym: [L. herculeus, fr. Hercules: cf. F. herculéen.
See Hercules.]
1. Requiring the strength of Hercules; hence, very great, difficult,
or dangerous; as, an Herculean task.
2. Having extraordinary strength or size; as, Herculean limbs.
"Herculean Samson." Milton.
Source: Webster’s Unabridged Dictionary 1913 Edition