Assify Share definition Flag adj. The act of changing a good situation or object into a completely crappy representation of its former self.p.tense Assifiedcon. tense Assifying He is going to assify that room I just know it.Did you see how she assified that car?Why are you assifying what I am trying to say? Assify by XpideR G August 5, 2009 Get the Assify mug.