| austere(adjective, simple, pure, basic, unadorned) |
| ball of fire |
| bare(adjective, simple, pure, basic, unadorned) |
| bare bones(expression, adjective, simple, pure, basic) |
| basic(adjective, simple, pure, unadorned) |
| bloodless(adjective, dull, weak, mild, feeble) |
| boiled down(expression, adjective, dull, weak, mild) |
| bourgeois |
| characterless(adjective, simple, plain, usual, humble) |
| chronic(adjective, common, natural, regular, normal) |
| clean(adjective, simple, pure, basic, unadorned) |
| colorless(adjective, monotonous, neutral, expressionless, monochrome) |
| constant(adjective, common, natural, regular, normal) |
| current(adjective, common, natural, regular, normal) |
| customary(adjective, common, natural, regular, normal) |
| cut-and-dried(adjective, natural, regular, normal, customary) |
| cut and dried |
| diligent |
| diluted(adjective, dull, weak, mild, feeble) |
| discreet(adjective, simple, pure, basic, unadorned) |