| absolute(adjective, complete, flat, limit, clean) |
| dense(adjective, characteristic, dull, slow, silly) |
| facile(adjective, clear, light, smooth, easy) |
| green(adjective, clean, honest, plain, informal) |
| hassle-free |
| inane(adjective, characteristic, dull, slight, slow) |
| sheer(adjective, hard, complete, right, severe) |
| smooth(adjective, clear, light, easy, straightforward) |
| unadulterated(adjective, complete, clean, total, plain) |
| understandable(adjective, quality, sharp, distinct, obvious) |
| unmistakable(adjective, quality, clear, easy, sharp) |
| quiet(adjective, clear, light, soft, easy) |
| asinine(adjective, characteristic, weak, silly, foolish) |
| elemental(adjective, pure, straightforward, whole, basic) |
| half-witted(adjective, dull, weak, ability, slow) |
| homespun(adjective, dull, plain, informal, coarse) |
| lowly(adjective, quiet, mean, lower, poor) |
| moronic(adjective, dull, weak, slow, silly) |
| rustic(adjective, open, easy, plain, informal) |
| simple-minded(adjective, dull, ability, honest, slow) |