man up

manned up; manning up; mans up

Definition of man up

intransitive verb

informal : to make an effort to deal with something (such as an obligation or a challenge) in a way that is considered strong or manly "… You're starting a family. Man up. Time to do grown man things."— Cassanova Womack man up and be honest that what you did that night was wrong.— Lenny Rosado

First Known Use of man up

1996, in the meaning defined above

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The first known use of man up was in 1996

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something desired as essential

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