Augean

[ aw-jee-uh n ]

/ ɔˈdʒi ən /

resembling the Augean stables in filthiness or degradation.

difficult and unpleasant: an Augean chore.

Origin of Augean

1590–1600; < Latin Augē(us) of Augeas (Greek Augeí(ās) + -us adj. suffix) + -an

I had to chase the chickens back into the coop and close the door so I could finish with the Augean Stables of the chicken pen.

What Did TJ Mean By “Pursuit of Happiness,” Anyway? |P. J. O’Rourke |June 8, 2014 |DAILY BEAST
Rather than meddle with them, I would give the Augean stables a second clean-out.

The Works of Lucian of Samosata, v. 4 |Lucian of Samosata
But while there is life in a young patient there is always hope, and we at once set to work on our Augean task.

A Labrador Doctor |Wilfred Thomason Grenfell
Not that he abandoned his determination to cleanse his Augean stables.

Kophetua the Thirteenth |Julian Corbett

By sheer persistence and strength to enforce her commands, she had brought about a cleansing nothing short of Augean.

A Woman's Burden |Fergus Hume
His mind was very far from his official duties and the mass of reminders before him—this Augean stable of arrears.

The Snare |Rafael Sabatini

Augean

/ (ɔːˈdʒiːən) /

extremely dirty or corrupt

C16: after Augeas; see Augean stables