One who is unhappy, or extols being miserable as a virtue; a philosopher of pessimism.(noun)
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Use "miserabilist" in a sentence
"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."
"Something that a gay teen might rather prefer to see than some miserabilist tale aimed at middle-class post-college hipsters and chin-strokers?"
"The associated childhood memory is of my miserabilist next-door neighbour, Mr Fletcher, who mowed his lawn twice a week (so it was carpet-like and perfect) and would never give my ball back."