uneducated
un-ed-u-cat-ed
adjective
Lacking formal schooling or general knowledge, often due to limited opportunity.
"He was uneducated but very wise."
Thesaurus
Synonyms: ignorant, undereducated, untutored, nescient, illiterate, unlettered, unschooled, unstudied, untaught, unlearned
Antonyms: educated