| middle-class(adjective, common) |
| middle-of-the-road(adjective, reasonable, sensible, common, restrained) |
| outlandish |
| plastic(adjective, moderate, common, natural, usual) |
| predictable(adjective, normal, commonplace, customary, typical) |
| pure and simple(expression, adjective, idiom, simple, plain) |
| rare |
| reasonable(adjective, simple, sensible, plain, common) |
| received(adjective, impulse) |
| settled(adjective, set, common, regular, commonplace) |
| straightforward(adjective, clear, simple, plain, relaxed) |
| strange |
| subordinate(adjective, mean, simple, lower, gentle) |
| tame(adjective, dull, simple, reasonable, flat) |
| tiring |
| ubiquitous(adjective, common, familiar, standard, current) |
| ugly(adjective, dull, plain, common, usual) |
| unadorned(adjective, simple, reasonable, plain, pure) |
| unaffected(adjective, simple, reasonable, plain, restrained) |
| unconventional(adjective, simple, plain, relaxed, straightforward) |