crapehanger

crape·hang·er

 (krāp′hăng′gər)
n.
A morose, gloomy, or pessimistic person.

crapehanger

or

crepehanger

n
informal US a gloomy person; a pessimist

crape•hang•er

or crepe•hang•er

(ˈkreɪpˌhæŋ ər)

n.
a pessimist.
[1915–20, Amer.]