decomp noun 4verb 2forms 3 noun4 •(slang) Decomposition.There's no decomp, so the body can't have been there long. •(slang) A decomposed body."It's a decomp. There's gonna be maggots, and that means I'm gonna have nightmares." — 2007 •(slang) A decompilation (especially of a video game). •[plural only] (slang) The results of a decompilation (especially of a video game). verb2 •(slang) To decompose. •(slang) To decompile (especially a video game).If you want to decomp my sweater — Ocarina of Time has been fully decompiled into human-readable code — 2021 formsdecomped · decomping · decomps