| lowbrow(untaught, unschooled) |
| natural(adjective, open, simple, innocent, crude) |
| primitive(adjective, open, simple, knowledge, easy) |
| rustic(adjective, open, simple, easy, rough) |
| uncivil(adjective, rude, cruel, vicious, fierce) |
| uncivilized(adjective, rough, rude, cruel, coarse) |
| uncouth(adjective, dull, rough, low, rude) |
| unskilled(adjective, new, raw, innocent, inept) |
| young(adjective, new, raw, innocent, little) |
| absurd(adjective, foolish, stupid, impractical, half-baked) |
| artless(adjective, simple, easy, innocent, real) |
| asinine(adjective, simple, silly, foolish, stupid) |
| blockheaded(adjective, dull, slow, foolish, stupid) |
| coarse(adjective, dull, rough, low, rude) |
| crackpot(adjective, foolish, impractical, half-baked, doomed) |
| crazy(adjective, foolish, stupid, impulsive, absurd) |
| cretinous(adjective, foolish, unfamiliar, unknowing, unaware) |
| dim-witted(adjective, dull, simple, slow, foolish) |
| doltish(adjective, dull, simple, slow, foolish) |
| dopey(adjective, slow, foolish, stupid) |