Definitions

optimism

[op-tuh-miz-uhm] / ˈɒp təˌmɪz əm /

NOUN

state of having positive beliefs

Synonyms

STRONGEST

anticipation certainty confidence elation enthusiasm expectation happiness idealism trust

STRONG

assurance brightness buoyancy calmness cheer cheerfulness easiness encouragement exhilaration hopefulness positivism sanguineness sureness

WEAK

good cheer looking on bright side rose-colored glasses

Antonyms

STRONGEST

depression distrust doubt fear sadness sorrow uncertainty unhappiness

STRONG

discouragement gloom

WEAK

hopelessness 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.

The latest numbers don’t offer a ton of optimism.

From Barron's • Jun. 12, 2026

Manager Dave Roberts had expressed optimism Thursday night, after the Dodgers’ 8-6 win against the Pirates at PNC Park, that Ohtani would not miss additional time for the ailment.

From Los Angeles Times • Jun. 12, 2026

SpaceX's valuation is largely based on optimism about its potential future earnings, as opposed to financial results it has demonstrated so far.

From BBC • Jun. 12, 2026

Already, he has stirred up optimism when he took the country to the semifinals of the 2024 Copa America, while the U.S. was knocked out in the group stage.

From The Wall Street Journal • Jun. 12, 2026

But just as optimism has its dark side, the Peloponnesian War was not without its bright spots, at least in terms of literature.

From "The Hidden Gallery" by Maryrose Wood

Vocabulary lists containing optimism

Words for a New Year

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Power Suffix: -ism

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Starting Your New Life: Inspiring Words from Commencement Speeches

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