unliterary (adj.)

• barbarous
• colloquial
• common
• conversational
• deceived
• everyday
• familiar
• heathen
• illiterate
• informal
• lowbrow
• nonintellectual
• nonstandard
• pagan
• rude
• spoken
• substandard
• unbooked
• uncultivated
• uncultured
• uneducated
• unguided
• uninstructed
• unlearned
• unlettered
• unread
• unrefined
• unscholarly
• unschooled
• unstudied
• unstudious
• untaught
• untutored
• vernacular