Dictionary.com
Thesaurus.com
Synonyms

pessimism

American  
[pes-uh-miz-uhm] / ˈpɛs əˌmɪz əm /

noun

  1. the tendency to see, anticipate, or emphasize only bad or undesirable outcomes, results, conditions, problems, etc..

    His pessimism about the future of our country depresses me.

  2. the doctrine that the existing world is the worst of all possible worlds, or that all things naturally tend to evil.

  3. the belief that the evil and pain in the world are not compensated for by goodness and happiness.


pessimism British  
/ ˈpɛsɪˌmɪzəm /

noun

  1. the tendency to expect the worst and see the worst in all things

  2. the doctrine of the ultimate triumph of evil over good

  3. the doctrine that this world is corrupt and that man's sojourn in it is a preparation for some other existence

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of pessimism

First recorded in 1785–95; from Latin pessim(us) “worst” (suppletive superlative of malus “bad”) + -ism; modeled on optimism ( def. )

Explanation

Pessimism means thinking the worst. It's the opposite of optimism, which means assuming the best. Most people feel that too much pessimism is paralyzing — who will ever try anything if they are always sure they will fail? Pessimism comes in two flavors. With one, you feel that something bad will happen. You feel pessimistic about the geometry final. How will you pass it? Pessimism is also the tendency to expect the worst in everything. A pessimist in love is a person sure that there must be something wrong with the person to love them back. A pessimist on an airplane is sure the plane is missing some essential part that won't be noticed until it plummets from the sky. Can pessimism be fun? Not really ever.

Keep Reading on Vocabulary.com

Vocabulary lists containing pessimism

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Pessimism among white-collar professionals has risen as high-profile employers have announced big job cuts, with some executives saying they anticipate artificial intelligence can do more workers’ jobs.

From The Wall Street Journal • Jan. 10, 2026

Pessimism is built into the being of English sports fans.

From BBC • Oct. 5, 2023

Pessimism has grown since October, when 27% said they were.

From Seattle Times • Feb. 13, 2023

Pessimism about the economy has spread to the wider population, said Esfandyar Batmanghelidj, founder of the London-based Bourse & Bazaar Foundation think tank.

From Los Angeles Times • Feb. 3, 2023

Pessimism is in the right; for it is proved by an experience only too long-lived that the only result of happiness exclusively pursued is an increase of the capacity for suffering.

From Outlines of a Philosophy of Religion based on Psychology and History by Sabatier, Auguste

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "pessimism" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com