Female shaming term used to make men act against their own self-interest and for the benefit of women. Also used by manginas and white knights in the futile hope of scoring with women.
That white knight told me to "man up" and take care of that chick who is on welfare and has three kids by three different dudes.
by Jofish Marmar February 19, 2017
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To work through impediments and obstacles without whining
In the National Basketball Association Championship finals, coach Avery Johnson of the Dallas Mavericks complained that their rivals, the Miami Heat, were playng "playground basketball" because of the Heat's physical play.

Heat player James Posey responded:"If Johnson wants to call it playground basketball, so be it.Well, sometimes in playground ball you go out there and man up and say 'I can play through a turnover and play through a foul.'You just continue to play. That's playground ball and you just have to man up about the situation."

by Donald Marks June 18, 2006
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6. Man up can also mean for an individual to be (not "act") mature, to grow up, quit being childish, to change their ways and turn around (do a 180) and to go the correct way from now on, etc...

7. Close to that: man up can also mean for someone to stop being self-centered and to look at what they are doing, or how they are acting - for them to change viewpoints, and perspective on the situation(s) and move forward in the correct direction in their life, and/or in others lives.

8. Man up can also mean for one to be a leader, to step up to the plate when no one else will, to give it your best shot, to TRY!
6. Finally at age 38 I realized that I wasn't helping out anyone else but myself when I did those things, so I (did man up) grew up & repented of my ways (did a 180 degree turn from where I was at before, to go the other way now). It took some doing, and I am still working on it, but at least my family & friends know where I stand now.

7. Yanno, I wasn't sure where I was headed, because I really had no goals in my life; but since I met her - I (did man up) am on the right path!

8. When no one else would do their duty to step out onto the Battlefield, a scrawny Private (did man up), took notice, stood up, and started working his way through the enemy lines. His initiative brought on a great victory that day, and now he is a Hero to many.
by IrishDaddy2U April 12, 2010
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To take responsibility for your selfish actions, reflect on the consequences, and make an effort to make things right through words and actions.
Why are you sexting me? I'm pissed at you, and will be until you man up.
by accident-prone August 29, 2010
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originally used in context to video games in which, if a player's character was on the verge of death, one would shout to the player to "man-up." has elvoved into meaning "stop being a big wussy baby."
Dude, stop crying and man-up! (or)

Tony: Dude, can we take a break from the Wii? My hands are cramping?
Ralph: Man-up, wuss!
by SUPER-AWESOME-MAGIC November 30, 2006
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1. To acknowledge and to take responsibility for your own actions.

2. Don't blame others for your own mistakes, problems, or issues when you know it is your fault and not anyone elses. If it is someone elses fault that you are in a situation or predicament then do the best you can to deal with it.

3. Some people say it means not to cry; that is incorrect. We all have feelings; to deny them is to lie to yourself and others, "MAN UP" and deal with it. If you don't you only cause yourself physical, mental, psychological, emotional, and spiritual damage; and you also affect those around you in a negative way as you take it out on them, instead of dealing with it properly. EX: Jesus was a Man among men; he didn't "cry" He "wept tears of blood." He went to the cross, He manned up for things that were not His own.
Even if you are not a Christian/Believer you can surely admit that Jesus was not a wimp, coward, or a liar - He said it, and did it.
1. He did the right thing, he went back and (man up) told his boss the truth and accepted the consequences instead of letting his co-worker take the fall for it.

2. She accepted (man up)responsibility for the accident and told her Mom that she is the one who broke the antique.

3. I felt so sorry for the sobbing man. His immediate family died in a tragic head-on car accident because someone else was drinking and driving. Overall he is dealing with it the best that he can - he is letting it all out (man up), mourning as he should. He sure does have the right to do so.
by IrishDaddy2U April 12, 2010
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An uplifting imperative, derived from the saying "be a man about about it" - to grow a pair, to stop being childish, to stop complaining etc.
This saying can be used in many situations.
1) 'C'mon Gareth, man up! There's no time for tears in this day and age.'
2) After some hurtful comments from a female colleague, Gareth turned to Jimmy for advice. Jimmy said "Grow a pair and man up!"
3) 'Gareth is acting so childish - he needs to man up'
by meandmyfufu January 26, 2011
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