Open English Wordnet
Adjectives
(s)ignorant, nescient, unlearned, unlettereduneducated in general; lacking knowledge or sophistication“an ignorant man”, “nescient of contemporary literature”, “an unlearned group incapable of understanding complex issues”, “exhibiting contempt for his unlettered companions”
(s)ignorant, illiterateuneducated in the fundamentals of a given art or branch of learning; lacking knowledge of a specific field“she is ignorant of quantum mechanics”, “he is musically illiterate”
(s)ignorant, unknowledgeable, unknowing, unwittingunaware because of a lack of relevant information or knowledge“he was completely ignorant of the circumstances”, “an unknowledgeable assistant”, “his rudeness was unwitting”