| noncritical |
| not complex(expression, adjective, clean, plain, pure) |
| off-the-cuff(adjective, simple, easy, plain, modest) |
| offhand(adjective, cool, informal, casual, easygoing) |
| open(adjective, simple, easy, plain, relaxed) |
| open and shut(expression, adjective, idiom, clean, plain) |
| perfunctory(adjective, cool, relaxed, casual, easygoing) |
| pure(adjective, simple, clean, plain, modest) |
| pure and simple(expression, adjective, idiom, clean, plain) |
| purposeless(adjective, cool, informal, relaxed, easygoing) |
| rustic(adjective, simple, clean, plain, pure) |
| severe |
| sheer(adjective, simple, clean, plain, pure) |
| single(adjective, simple, clean, plain, pure) |
| slovenly |
| spartan(adjective, simple, clean, plain, pure) |
| spontaneous(adjective, simple, easy, plain, relaxed) |
| sporty(adjective, simple, easy, plain, modest) |
| stark |
| throwaway(adjective, simple, easy, plain, modest) |