| conventional(adjective, simple, plain, usual, humble) |
| dim(adjective, dull, boring, routine, tedious) |
| dusty |
| easy(adjective, quiet, soft, gentle, flat) |
| everyday(adjective, dull, simple, plain, common) |
| fair(simple, plain, indifferent, ordinary, modest) |
| fluent(adjective, quiet, soft, gentle, flat) |
| garden-variety(adjective, dull, simple, clean, plain) |
| ho-hum(adjective, simple, clean, plain, ordinary) |
| inconclusive(adjective, dull, monotonous) |
| inconsiderable |
| indecisive(adjective, dull, uncertain, monotonous, indefinite) |
| insignificant |
| invariable(adjective, quiet, soft, gentle, flat) |
| jejune |
| lackluster(adjective, dull, simple, clean, plain) |
| lifeless(adjective, dull, quiet, simple, flat) |
| long-winded(dull, boring, tedious) |
| mere(adjective, unimportance) |
| no great shakes(adjective, simple, plain, indifferent, ordinary) |