15
To play man-to-man defense in a basketball game.
Timid Timothy pissed his pants when the coach told him that he'd have to man up against Shaq.
by Nick D May 17, 2004
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16
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 11, 2010
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17
After a long night of high octane™ drinking.... the procces of hanging over occurs. To deposit these prodiougous feelings a beer or some other alcholic beverage is in order, to insure the release of the harmful intoxicating feeling.
After Timmy was drinking with high octane™ all night, he arose out of bed with a raging headache. To release the pain from his body he had a man up session and felt much better.
by GaryF August 09, 2006
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18
v. To act in accordance with established masculine roles in a given situation, implying courage and responsibility. Usually used in the imperative, the term is a favorite of police who want suspects to incriminate themselves. Ironically, advice to 'man-up' is usually followed by a promise that it is the least painful alternative.
You signed for a package full of weed, now you need to man-up, and admit that you knew what was in it. It'll go easier for you with the judge.
by tom ballard, esquire March 02, 2009
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19
Be more brave. Step up.
Talkin' talkin' talkin' talkin' talkin' dat shit?
Talkin' talkin' talkin' talkin' talkin' dat shit?
Talkin' talkin' talkin' talkin' talkin' dat shit?
Talkin' talkin' talkin' talkin' talkin' dat shit?
Man up, muthafucka, man up.
by D-Miles September 30, 2006
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20
To become tougher, or more manly.
"Damn nigga, yo ass need to man up!"
"I think it's time for someone to man up!"
"We love to get drunk, go the bar, and find the toughest son of a bitch in there and see how tough he really is...see if he can MAN UP!"
by TST November 11, 2006
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21
When a man is being a little sissy boy blaming others for his problems and lying about the truth.

Action verb: To Start acting like a real man.
Dude, you need to Manup to the truth and accept responsibility for your actions.
by joyle March 27, 2008
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