Incoherrant Share definition Flag Portmanteau of incoherent and errant, effectively ending up at the meaning "straying from the proper path without aim or purpose". "I've been acting rather incoherrant lately.""These sidequests are incoherrant." Incoherrant by Owange October 31, 2012 0 0 Get merch Get the Incoherrant mug. Buy Now — $32.95 See more merch