This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. One who is unhappy, or extols being miserable as a virtue; a philosopher of pessimism.

"But in hindsight I can’t deny that there was something fundamentally “dark” about the RS books, a kind of miserabilist ruling aesthetic or purple-tinged gothlike mood."

miserablist    miserablism    miserabilism   

Mirabilis    mirabilis    miserables   

unhappy    killjoy    spoilsport