Eeyorish
Concise Oxford English Dictionary © 2008 Oxford University Press:
Eeyorish /ˈiːɔːrɪʃ/ (also Eeyoreish)
▶adjective pessimistic or gloomy.
– origin from Eeyore, a gloomy donkey in A. A. Milne's Winnie-the-Pooh.
'Eeyorish' also found in these Oxford entries:

