| unperceptive |
| cincher(adjective, unalloyed, unornamented, nitwitted) |
| incomplex(adjective, unalloyed, unornamented, nitwitted) |
| inelaborate(adjective, unalloyed, unornamented, nitwitted) |
| nitwitted(adjective, unalloyed, unornamented) |
| no problem(expression, adjective, unalloyed, unornamented, nitwitted) |
| no sweat(expression, adjective, unalloyed, unornamented, nitwitted) |
| not complex(expression, adjective, unalloyed, unornamented, nitwitted) |
| not difficult(expression, adjective, unalloyed, unornamented, nitwitted) |
| open and shut(expression, adjective, idiom, unalloyed, unornamented) |
| pure and simple(expression, adjective, idiom, unalloyed, unornamented) |
| simple(adjective, unalloyed, unornamented, nitwitted) |
| simple as ABC(expression, adjective, idiom, unalloyed, unornamented) |
| snapper(adjective, unalloyed, unornamented, nitwitted) |
| soft-headed(adjective, unalloyed, unornamented, nitwitted) |
| unalloyed(adjective, unornamented, nitwitted) |
| unartificial(adjective, unalloyed, unornamented, nitwitted) |
| uncombined(adjective, unalloyed, unornamented, nitwitted) |
| uncompounded(adjective, unalloyed, unornamented, nitwitted) |
| undecorated(adjective, unalloyed, unornamented, nitwitted) |