[hur-kyuh-lee-uhn, hur-kyoo-lee-uhn]


requiring the great strength of a Hercules; very hard to perform: Digging the tunnel was a herculean task.
having enormous strength, courage, or size.
(initial capital letter) of or relating to Hercules or his labors.

Origin of herculean

1590–1600; < Latin Hercule(us) of, belonging to Hercules + -an

Synonyms for herculean

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for herculean



requiring tremendous effort, strength, etca herculean task
(sometimes capital) resembling Hercules in strength, courage, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for herculean



1590s, from Hercules + -an.

Online Etymology Dictionary, © 2010 Douglas Harper