| supine(adjective, cold, indifferent, dead, unsympathetic) |
| uncurious(adjective, detached, casual, impartial, unbiased) |
| undefined(adjective, dull, flat, pale, bland) |
| unenthusiastic(adjective, indifferent, listless, unconvinced, uninspired) |
| unexcitable(adjective, calm, quiet, cool, moderate) |
| unflappable(adjective, calm, quiet, cool, moderate) |
| asexual |
| bleached(adjective, dull, light, flat, fair) |
| candid(adjective, calm, fair, cold, detached) |
| collected(adjective, calm, quiet, cool, smooth) |
| ecru |
| faint(lethargic, languid, indolent) |
| fair-minded(adjective, fair, indifferent, detached, aloof) |
| lackluster(adjective, colorless) |
| lusterless(adjective, colorless) |
| matter-of-fact(adjective, cold, dead, apathy, passive) |
| middle(noun, mean, standard, average, middling) |
| neutrality |
| nondiscriminatory(adjective, calm, fair, cold, detached) |
| passable(adjective, reasonable, sensible, restrained, modest) |