Depressed
deal
Deduce
Summer :D
dispel
Daft Dumb Dense
Dreadful.
Dread.
The word could be disarrayed, disordered, disorderly, or disheveled.
synonyms: sad · miserable · sorrowful · dejected · despondent · disconsolate · morose · [more] (unhappy at/about/with) not satisfied or pleased with (a situation). "many were unhappy about the scale of the cuts" synonyms: dissatisfied · displeased · discontented · disappointed · disgruntled · disapproving of unfortunate. "an unhappy coincidence" synonyms: unfortunate · unlucky · luckless · hapless · ill-starred · ill-fated · [more]
body, bunch, bundle
A synonym starting with d of the word calamity is 'disaster'
dot