1. unenlightened Ignorant signifies destitute of education or knowledge, or lacking knowledge or information; it is thus a relative term. The most learned man is still ignorant of many things; persons are spoken Synonyms: ignorant, ill-informed, unenlightened, unlearned, untaught, illiterate, uninformed, unlettered, untutored, uneducated, uninstructed, unskilled Antonyms: educated, learned, sage, skilled, trained, well-informed, wise, instructed