| broken(adjective, dull, flat, low, sad) |
| cast down(expression, adjective, dull, flat, low) |
| dispirited(adjective, dull, flat, low, sad) |
| down in the dumps(expression, adjective, idiom, dull, flat) |
| down in the mouth(expression, adjective, idiom, dull, flat) |
| downcast(adjective, dull, flat, low, sad) |
| downhearted(adjective, dull, flat, low, sad) |
| draggy(adjective, dull, flat, low, sad) |
| droopy(adjective, dull, flat, low, sad) |
| flat tire(expression, adjective, dull, flat, low) |
| inanimate(adjective, dull, flat, low, sad) |
| languishing(adjective, dull, flat, low, sad) |
| melancholic(adjective, dull, flat, low, sad) |
| subdued(adjective, dull, flat, low, sad) |
| submissive(adjective, dull, flat, low, sad) |
| unenthusiastic(adjective, dull, flat, low, sad) |
| brooding |
| broody |
| chap-fallen |
| cheerless |