iggit Share definition Flag 1. An "iggit" is slang for {idiot]. It most likely originated down South, probably by rednecks. 1. If that iggit does that again Ima blow his head off! iggit by IrishDaddy2U April 12, 2010 0 0 Get merch Get the iggit mug. Buy Now — $32.95 See more merch