Herculean (adjective)

1. Requiring great strength, effort, or courage.
2. Of or like Hercules, extremely strong or powerful.

Origin:

The word "herculean" comes from the name of the roman and greek demigod hercules, known for his extraordinary strength and feats of physical endurance. it refers to something that requires great strength, effort, or courage.

Examples:

1. The task was herculean, requiring great effort and determination.
2. The weightlifting was herculean, requiring great strength and endurance.
3. It was a herculean effort to move the boulder.