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1.
Efficable is not a f*cking word. It's the result of dumb ass people making vain attempts at intelligent speech. The correct word is efficacious.
Telling him about himself wouldn't be efficable or accomplish anything.
by thedumass January 14, 2008
 
2.
A way of describing a woman as beautiful, sexy, pretty, and worth F____ing
Cole: Hey Taylor what do you think of Violeta?
Taylor: Man she's gorgeous! Totally Efficable
by Blanconino1328 November 05, 2008