lil dex Share definition Flag Lil dex ( pussiest in gang , group aka clique) will not fight for his niggas (other gang members apart of same gang) Also a (lil dex) will snitch if they have to. Shut yo lil dex ass up you ain't riding lil dex by 17o January 6, 2017 0 0 Get merch Get the lil dex mug. Buy Now — $32.95 See more merch