| dampen(verb, upset, trouble, dull, reduce) |
| dash(verb, upset, trouble, bother, fail) |
| demoralise |
| depressed(adjective, dull, bad, blue, flat) |
| despondent(adjective, dull, bad, blue, flat) |
| discomfit(verb, upset, crush, confuse, shame) |
| disconcert(verb, upset, fail, cross, deceive) |
| disconsolate(dull, low, miserable, depressed, dejected) |
| disheartened(adjective, dull, bad, blue, sad) |
| dispirited(adjective, dull, bad, blue, flat) |
| doleful(adjective, sad, unhappy, miserable, depressed) |
| downhearted(adjective, dull, bad, blue, flat) |
| droopy(adjective, dull, bad, blue, flat) |
| embarrass(verb, upset, crush, overcome, confuse) |
| flatten(verb, destroy, level, smash, overthrow) |
| foil(verb, upset, fail, cross, deceive) |
| in low cotton |
| knock down(verb, expression, phrasal verb, destroy, level) |
| let down(verb, expression, adjective, phrasal verb, upset) |
| low(adjective, dull, bad, simple, blue) |