Gothic, Philistine, barbarous, benighted, bookless, colloquial, common, conversational, deceived, empty-headed, everyday, familiar, functionally illiterate, grammarless, heathen, hoodwinked, ignorant, ill-educated, illiterate, informal, know-nothing, led astray, lowbrow, misinformed, misinstructed, mistaught, nonintellectual, nonstandard, pagan, rude, spoken, substandard, unbooked, unbookish, unbooklearned, unbriefed, uncultivated, uncultured, unedified, unenlightened, unerudite, unguided, uninstructed, unintellectual, unlearned, unlettered, unliterary, unread, unrefined, unscholarly, unschooled, unstudied, unstudious, untaught, untutored, vernacular