4. It also means for a workplace, or corporation to deal with, take care of, and help those people that they have caused hurt, damage, and/or injury to.

5. It can also refer to respecting someone enough to go talk to them, apologize, do what's right when it is the right time to do so.
4. The opposite would be the company fighting you in court with expensive, fancy lawyers who's sole responsibility is to twist situations/blame and/or to lie for and protect the company or organization that harmed the person(s) sitting at the other side of the table, hurt for the rest of their life. When someone does this all for money; it's NOT manning up - it's the farthest thing from it. It's all about doing the right thing... and this is not it.

5. The boss had no idea who had dinged up the car door. But she went to her boss and told her boss that it was she that accidentally dinged up the new Porsche. She is admirable for (man up) her responsibility, and she gained a lot of credibility with her boss too. She asked for forgiveness, and all is fine & well now between them. I think it may have started a new friendship between them, just because she owned up (man up) to it.
by IrishDaddy2U April 12, 2010
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To sqaure up prior to thumpin'
To prepare yourself to encounter your opponent just prior to combatant engagment
A: Sup den ni**a?

B: whatever you might want it to be ni**a

A: man up den

B: you ain tryna see me
by M. Du May 10, 2005
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adv; mans up, manning up, manned up.

1.To man up: Its time for you to man up for your baby girl.

2.To be manning up: he manned up once he saw the one.

3.To have manned up: he manned up for his son in the past.
1.Did he man-up, or fess-up to his moma!?

2.Today I might be manning-up, for class.
3.Get up to my level of happiness, before you leave.
by RB. 865. January 26, 2014
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a way to send away hexes or to get a faggot to show masculinity
A Rumps...MAN UP.baggaloggadagga dooga dogga logga....HEX BROKE!!!!!!!
by Transworld Surfing for xbox August 16, 2008
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getting ready to go fight or do something daring, preparing for a tough siutaion most times a fight
Ayo we gotta box them dudes tonight
Everyone man up we gotta rumble tonight
by Chris May 17, 2004
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Your guy is a shooter and he's wide open at the three point line. This is when you man up - play tight defense.
by KRSplat May 20, 2004
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Like in "The Godfather" when Don Vito Corleone shakes Johnny Fontane, shouts at him to act like a man, and then slaps him.
Man up this.
by Adam May 16, 2004
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