| languishing(adjective, dull, weak, easy, sad) |
| phlegmatic(adjective, dull, cool, weak, easy) |
| prosaic(adjective, dull, weak, excite, stupid) |
| soulless(adjective, dull, hard, careless, cold) |
| unanimated(adjective, dull, boring, lifeless, late) |
| unemotional(adjective, hard, cool, unfriendly, blank) |
| unenthusiastic(adjective, dull, cool, weak, easy) |
| uninspired(adjective, dull, excite, boring, pale) |
| blah(adjective, dull, weak, easy, sad) |
| blue(adjective, low, happy, sad, informal) |
| chilly |
| cold-blooded(adjective, hard, cool, careless, indifferent) |
| colorless(adjective, dull, weak, excite, stupid) |
| cool(adjective, dull, kind, gentle, warm) |
| coward |
| cowardly(adjective, weak, soft, nervous, shy) |
| disconsolate(adjective, blue, sad, unhappy, miserable) |
| dispassionate(adjective, cool, blank, aloof, unemotional) |
| emotionless(adjective, cool, cold, indifferent, useful) |
| gloomy(adjective, low, happy, sad, unhappy) |