strongman
US /ˈstrɑːŋ.mæn/
UK /ˈstrɑːŋ.mæn/

1.
a man of unusual strength, especially one who performs feats of strength as entertainment.
:
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The circus featured a strongman who could lift a car.
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He trained for years to become a professional strongman.
2.
a leader who rules with absolute power and often by force.
:
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The country was ruled by a ruthless strongman for decades.
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The rise of a new strongman threatened regional stability.