combelieve Share definition Flag basically a contraction of "couldn't believe." used as an exclamation. Rufus: DID YOU SEE THAT??? WOW!!! That girl wuz fine bro... Andrew: Combelieve, man! combelieve by Henry Lewis Spaaltchre July 15, 2005 0 0 Get merch Get the combelieve mug. Buy Now — $32.95 See more merch