Top Definition
To get someone pregnant
Amanda got knocked up because Jimmy didn't use protection.
by startenhash October 21, 2003

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to get pregnant; an unplanned pregnancy, unwanted.
fuck yo! i just knocked up this bitch, now i gotta pay child support!
by master p March 03, 2005

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To get a woman pregnant, perticually un-planned, un-wanted or in wedlock.
Ironicly, my radical femminest english teacher came in knocked up today.
by BigFishyBob March 25, 2007

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to get someone pregnant, generally unplanned.
jack had sex with with me, unprotected and now i'm knocked up..
by smile.- November 25, 2008

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To impregnate a lady..
"Lucy got knocked-up by Jeff.."
by Leeeeeeena September 07, 2005

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1.When a man gets a women pregnant, usually not planned.
1st person:
Hey Jessica you look sad what wrong?
2 person: Well, I'm pregnant!
1st person: "oh shit girl you got knocked up."

by MariiJane April 24, 2009

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"Knocked up" is slang for "Impregnating"

Though it is generally used negatively, in certain "ghetto" settings, it is a compliment to tell a girl her boyfriend knocked you up. No one is sure why, but many believe it is a compliment for implying that said boyfriend is attractive/sexually potent.
"You're flyboy got me knocked up/impregnated me"
"Thanks, girl! He is a looker!"
by mj tragic February 06, 2014

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