Added 10 October 2026 unknowledgeable adjective Categories: Describing WordsObscure Words adjective ! Definition from Wiktionary (CC BY-SA). More about unknowledgeable at Wordnik → Where our words come from → Lacking knowledge: ignorant, naive, or both. Related Words: ignorantuninformedunwittingunknowingunawareknowledgelesscluelessincognizantinscientinnocentnescientnaive Back to today's word