Yes it should be capitalized.
A "herculean" task (after Hercules' 12 labors).
This math problem is herculean, only geniuses can solve it.
The body builder's muscles were so big that he must have Herculean strength. Sometimes going to work on a Monday can seem a Herculean task.
an effort off herculeasHercules was a mythological figure of great size and strength. A Herculean effort is to say that one is strong, vigorous and determined in their attempt to achieve a result, as in a Herculean task.
Herculean task
A "herculean" task (after Hercules' 12 labors).
herculean task for his brain cells :p
Parting with someone you really like is a herculean task.
Herculean - song - was created on 2006-10-30.
This math problem is herculean, only geniuses can solve it.
The body builder's muscles were so big that he must have Herculean strength. Sometimes going to work on a Monday can seem a Herculean task.
an effort off herculeasHercules was a mythological figure of great size and strength. A Herculean effort is to say that one is strong, vigorous and determined in their attempt to achieve a result, as in a Herculean task.
Herculean |ˌhərkyəˈlēən; hərˈkyoōlēən|adjective requiring great strength or effort : a Herculean task.• (of a person) muscular and strong.ORIGIN late 16th cent. (in the sense [relating to Hercules] ): from LatinHerculeus 'Hercules' + -an .
The twelve labors of Hercules.
Greece
metaphor
Herculean task