knock upRate this phrase:(4.00 / 2 votes)Say it
To impregnate, especially out of wedlock. See knocked up.

I guess his summer plans are shot now that he knocked his girlfriend up.

Additional definitions for 'knock up':

knock upTo put together, fabricate, or assemble, particularly if done hastily or temporarily. See also knock together.
knock upIn the morning as by knocking at the door; rouse; call; summon; also, to go door-to-door on election day to persuade a candidate's supporters to go to the polling station and vote. See also knocker up.
knock upTo exhaust; wear out; weary; beat; tire out; to fatigue until unable to do more.
knock upTo become exhausted or worn out; to fail of strength; to become wearied, as with labor; to give out.
knock upTo gently hit the ball back and forth before a tennis match, as practice or warm-up, and to gauge the state of the playing surface, lighting, etc. See knock-up.
See them all »


Find a translation for the knock up phrase in other languages:

Select another language:

Nearby phrases

Some more phrases from our dictionary similiar to knock up

Discuss this knock up phrase with the community:


Use the citation below to add this knock up definition to your bibliography:


"knock up." STANDS4 LLC, 2018. Web. 18 Mar. 2018. <>.

We need you!

Help us build the largest human-edited phrases collection on the web!