nescient

adjectives

holding that only material phenomena can be known and knowledge of spiritual matters or ultimate causes is impossible

uneducated 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"

ignorant, nescient, unlearned, unlettered

is derived from

nescience