optimism

American  

[op-tuh-miz-uhm] / ˈɒp təˌmɪz əm /

noun

1. a disposition or tendency to look on the more favorable side of events or conditions and to expect the most favorable outcome.

   Synonyms:

   cheerfulness, hopefulness, confidence

   Antonyms:

   cynicism, pessimism

2. the belief that good ultimately predominates over evil in the world.

   Antonyms:

   cynicism, pessimism

3. the belief that goodness pervades reality.

4. the doctrine that the existing world is the best of all possible worlds.

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optimism British  

/ ˈɒptɪˌmɪzəm /

noun

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

2. hopefulness; confidence

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

4. the philosophical doctrine that this is the best of all possible worlds

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Other Word Forms

• antioptimism noun
• optimist noun
• optimistic adjective
• optimistically adverb
• overoptimism noun

Etymology

Origin of optimism

First recorded in 1730–40; from French optimisme, from Latin optim(um) ( optimum ) + French -isme -ism

Example Sentences

You know how we adults are inclined to respond to such unbridled optimism: With patronizing pats on the head.

From Los Angeles Times • Apr. 4, 2026

Authorities have expressed optimism that the soldiers' presence will make a difference this time around but Lamb is not completely convinced.

From BBC • Apr. 1, 2026

There seems to be optimism, as both U.S.

From The Wall Street Journal • Apr. 1, 2026

A key reason for his optimism is that the company’s ultrahigh-net-worth target customer owns an average of 3.7 homes, while billionaires own 10, on average.

From MarketWatch • Apr. 1, 2026

That was not unusual for a dress rehearsal, in Volpe’s experience, but also no cause for great optimism.

From "Drama High" by Michael Sokolove

Related Words

• anticipation
• certainty
• confidence
• elation
• enthusiasm
• expectation
• happiness
• idealism
• trust