Antonym: optimism. Similar words: pessimistic, dissimilar, assimilate, assimilation, animism, dissimilarity, optimism, progressivism. Meaning: ['pesɪmɪzm] 
n. 1. the feeling that things will turn out badly 2. a general disposition to look on the dark side and to expect the worst in all things.
n. 1. the feeling that things will turn out badly 2. a general disposition to look on the dark side and to expect the worst in all things. 
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1. His pessimism has the effect of depressing everyone.
2. He displayed his usual pessimism.
3. There were good grounds for pessimism about future progress.
4. There is now a mood of deepening pessimism about/over the economy.
5. His mood of deep pessimism cannot have been leavened by his mode of transport—a black cab.
6. In my opinion, this suggestion smacks of pessimism.
7. My first reaction was one of deep pessimism.
8. An underlying pessimism infuses all her novels.
9. Optimism was gradually taking the place of pessimism.
10. Pessimism seems to be the order of the day.
11. This widespread pessimism does not seem justified.
12. There is deep pessimism about the future.
13. Pessimism has become the fashion.
14. There was a general atmosphere of pessimism after the euphoria of last year.
15. There is a mood of pessimism in the company about future job prospects.
16. Pessimism is self-fulfilling - expect the worst and it happens.
17. A mood of pessimism had lodged in him.
18. The big firms reckon that this pessimism is overdone.
19. That pessimism is privately echoed inside the administration.
20. He expressed pessimism Thursday about the outcome,(sentencedict.com) however.
21. Pessimism leads to weakness, optimism to power. William James 
22. Pessimism is her distinguishing trait: she worries about many aspects of her work.
23. Nevertheless, I do not accept that his pessimism is warranted in Britain.
24. Modigliani's profound humanism and pessimism made him distrust political systems.
25. Pessimism is especially high among baby boomers, with twice as many expecting family income to drop this year as last.
26. Part of Malthus's pessimism stemmed from the conviction that when population increased the price of labor would drop.
27. Inspiration moves one from pessimism to optimism, from doubt to faith, from despair to hope, and from darkness to light! RVM
28. At the moment, optimism over interest rates is being offset by pessimism about the direction of corporate earnings.
29. In May, with the sudden spectre of civil war, pessimism turned to panic.
30. This may take the form of individual optimism or pessimism about likely future events within the territory.
More similar words: pessimistic, dissimilar, assimilate, assimilation, animism, dissimilarity, optimism, progressivism, simile, similar, limitlessness, facsimile, similarly, similitude, similarity, be similar to, verisimilitude, animist, optimist, optimistic, missing, mission, missile, dismiss, emission, omission, permission, commission, remission, admission.