uninstructed (adj.)

• barbarous
• benighted
• deceived
• empty-headed
• heathen
• illiterate
• incognizant
• lowbrow
• nonintellectual
• oblivious
• pagan
• rude
• unacquainted
• unaware
• unbooked
• uncultivated
• uncultured
• uneducated
• unfamiliar
• unguided
• uninformed
• unknowing
• unlearned
• unlettered
• unliterary
• unread
• unrefined
• unscholarly
• unschooled
• unstudious
• untaught
• untutored
• unwitting