1. To diminish or reduce in value.
2. To render into a crap-like state.
3. To cover or fill with crap.
I hope those scissor-monkeys over at Spiffy-Cuts don't encrappen my hair.

The recent spate of mortgage defaults is encrappening the credit markets.
by Alan, the guy with the thing. December 6, 2007
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To make something crap, or crapper than it previously was.
Alice: hey, did you hear that faceborg has launched a commenting plugin?

Bob: yeah, now all the fuckwits I went to high-school with can encrappen my stream with their banal comments about crap they watch on TV.
by I am faceborg March 2, 2011
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