kooky

adj.

know-how, knowing, knowingly, knowledgable, knowledge, knowledgeable, knowledgeably, known, known as, knuckle, knuckleduster, knucklehead, KO, koala, kobo, kohl, kohlrabi, kola, kook, kookaburra, kopeck (also kopek), koppie (also kopje), Koran, Koranic, Korea, Korean, kosher, koumiss, kowtow, kph, kraal, kremlin, krill, kris, krona, krone, krugerrand, krypton, Kt, Ku-Klux-Klan,