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2.
verb. To destroy or decrease the value of something. To render an object useless or worthless.
Damn, Did you see what Ron did to his truck? He can really smith out anything!
by Crystal Machen December 06, 2007
 
1.
To act boring and lame in lieu of an obviously more fun opportunity.
We were all going to have a good time but then Jeff decided to smith out.

"Everybody is doing it; don't be a smith"
by STL Beeg November 17, 2006