Home › Words › N › noncognitionnoncognitionnoncognition means absence of cognition; failure to know or perceive.Among words judged in Lexicurio's Arena, noncognition ranks #28,982 of 42,752 for Qualifying.EtymologyFrom non- + cognition.nounAbsence of cognition; failure to know or perceive.Definitions & examples from Wiktionary (CC BY-SA 3.0).