kooky adjective alsokook·ie\ˈkükē\ (kook·i·er ; kook·i·est-es) Etymology:kook (herein) + -y (I) or -ie, alteration (influenced by -ie) of -y (I) : having the characteristics of a kook : crazy : offbeat • kook·i·ly\-ilē\adverb • kook·i·ness\-ēnə̇s\noun