Synonyms for Ignorant (same or very similar meaning)
WordNet sense 1 (unaware because of a lack of relevant information or knowledge):
unknowing, unwitting, unknowledgeable
WordNet sense 2 (not informed; lacking in knowledge or information):
uninformed
WordNet sense 3 (uneducated in general; lacking knowledge or sophistication):
nescient, unenlightened, unlearned, unlettered
WordNet sense 4 (uneducated in the fundamentals of a given art or branch of learning; lacking knowledge of a specific field):
illiterate
WordNet sense 5 (not having a good education):
uneducated
From the ODE community, based on WordNet
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