a Herculean task
Advanced (C1)formal
A task that is very hard and requires great strength or effort.
"Rebuilding the city's infrastructure after the earthquake was a Herculean task."
Hear it in context

Sagrada Familia - Full Documentary
Real Engineering · 8:59
completing it became a Herculean task,

1 Hour of the Guys Keeping Things Unnecessarily Complicated
The Big Bang Theory · 43:36
Maintaining five friendships promises to be a Herculean task.

Sheldon and Leonard Moments That Define Best Friendship
The Big Bang Theory · 3:23
Maintaining five friendships promises to be a Herculean task,

S23 E12 - The Graham Norton Show | Full Episode | Cher, Baranski, Rupert Everett, Natalie Dormer
The Graham Norton Show · 18:49
What a Herculean task to get a film made.

What are they hiding underneath Antarctica? | Redacted w Clayton Morris
Redacted · 4:14
Uh just to capture one is is is a Herculean task.