Herculean

ˌhɜːr.kjuːˈliː.ən

adjective

requiring great strength or effort

The word 'herculean' is derived from Hercules, the Roman mythological hero known for his incredible strength and legendary labors. Therefore, when something is described as herculean, it implies that it is of extraordinary difficulty or magnitude, akin to the feats of Hercules.

E’en fortunate Napoleon Knows by experience, now, Bagratión, And dare not Herculean Russians trouble … But before he had finished reading, a stentorian majordomo announced that dinner was ready!

Leo Tolstoy

War and Peace

for, when the chief assail’d, Nor valour nor Herculean arms avail’d, Nor their fam’d father, wont in war to go With great Alcides, while he toil’d below.

Virgil

The Aeneid

But one of these balls, launched by Porthos’ herculean hand, passed so close to d’Artagnan’s face that he thought that if, instead of passing near, it had hit him, his audience would have been probably lost, as it would have been impossible for him to present himself before the king.

Alexandre Dumas

The Three Musketeers

A herculean struggle had begun.

Victor Hugo

Les Misérables

What was the meaning of this so steady and self-respecting, this small Herculean labor, I knew not.

Henry David Thoreau

Walden

It might have been supposed from his Herculean strength that one night of carousing, even accompanied by the most violent emotions, could have had little effect on him.

Fyodor Dostoevsky

The Brothers Karamazov

His distant cousin Zohra told him, coquettishly, “You must diet, cousinji, or we won’t be able to reach you to kiss!” But it did no good … and little by little Amina constructed in Old Delhi a world of soft cushions and draperies over the windows which let in as little light as possible … she lined the chick-blinds with black cloths; and all these minute transformations helped her in her Herculean task, the task of accepting, bit by bit, that she must love a new man.

Salman Rushdie

Midnight's Children: A Novel

Another Herculean tug.

King, Stephen

The Mist

So rose the Danite strong, Herculean Samson, from the harlot-lap Of Philistean Dalilah, and wak’d Shorn of his strength; they destitute and bare Of all their virtue.

John Milton

Paradise Lost

The hero, when to manly years he grew, Alcides' uncle, old Licymnius, slew; For this, constrain'd to quit his native place, And shun the vengeance of the Herculean race, A fleet he built, and with a numerous train Of willing exiles wander'd o'er the main; Where, many seas and many sufferings past, On happy Rhodes the chief arrived at last: There in three tribes divides his native band, And rules them peaceful in a foreign land; Increased and prosper'd in their new abodes By mighty Jove, the sire of men and gods; With joy they saw the growing empire rise, And showers of wealth descending from the skies.

Homer

The Iliad