herculean
1. [ adjective ] of extreme difficulty; requiring the strength of a Hercules
Examples:

"a herculean task"

Related terms: difficult
2. [ adjective ] displaying superhuman strength or power
Synonyms: powerful
Examples:

"herculean exertions"

Related terms: superhuman
3. [ adjective ] of extreme difficulty; requiring the strength of a Hercules
Examples:

"a herculean task"

Related terms: difficult
Similar spelling:   Hercules
  Herculaneum