Synonyms: herculean
Definition: extremely difficult; requiring the strength of a Hercules
Usage: a herculean task
Similar words: difficult, hard
Definition: not easy; requiring great physical or mental effort to accomplish or comprehend or endure
Usage: a difficult task; nesting places on the cliffs are difficult of access; difficult times; why is it so hard for you to keep a secret?
Definition: displaying superhuman strength or power
Usage: herculean exertions
Similar words: superhuman
Definition: above or beyond the human or demanding more than human power or endurance
Usage: superhuman beings; superhuman strength; soldiers driven mad by superhuman misery