15
cynic(noun, person, worrier, unbelieving, doubter)
12
doubter(noun, unbeliever)
12
gloomy(noun, adjective, person, worrier, cynic)
10
coward(noun, person, worry, individual, dread)
9
killjoy(noun, person, worrier, cynic, doubter)
7
defeatist(noun, person, worrier, cynic, doubter)
7
crepehanger(noun, person, worrier, cynic, doubter)
7
worrywart(noun, person, hope, prophet, worrier)
6
nonbeliever(noun, unbeliever)
6
prophet of doom(noun, expression, idiom, person, grouch)
6
wet blanket(noun, expression, idiom, person, grouch)
5
misanthrope(noun, person, detractor, cynic, unbelieving)
5
damper
5
naysayer(noun, worrier, cynic, doubter)
5
skeptic(noun, person, detractor, cynic, unbelieving)
4
agnostic(noun, unbeliever)
4
negativist
4
pessimism(noun, hopelessness, overestimation, underestimation)
4
pessimistic
3
alarmist(noun, person, cowardice)
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APASmart Define. (2015). pessimist thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/pessimist/thesaurus/synonyms
ChicagoSmart Define. 2015. "pessimist thesaurus" https://smartdefine.org/pessimist/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, pessimist thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/pessimist/thesaurus/synonyms>.
MLASmart Define. "pessimist thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/pessimist/thesaurus/synonyms>