verb
to act with courage, strength, and determination in a difficult situation
adjective
displaying qualities traditionally associated with masculinity, such as courage and toughness
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It is important for individuals to take responsibility for their actions and man-up when they make a mistake.
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Hey dude, you need to man-up and face the consequences of your actions.
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Stop whining and just man-up already!
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Sometimes in life, you just have to man-up and deal with whatever comes your way.