Herculean

US /ˌhɝː.kjuˈliː.ən/

UK /ˌhɝː.kjuˈliː.ən/

1.

requiring great strength or effort

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Moving that piano was a Herculean task.

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She made a Herculean effort to finish the marathon.

:

arduous strenuous demanding formidable titanic

2.

having or showing great strength or size

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The bodybuilder had a Herculean physique.

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He possessed a Herculean strength that amazed everyone.

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mighty powerful robust brawny colossal

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Herculean task