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.

And, while there’s been some sector rotation taking place in recent sessions, it remains the case that much of the market’s gains of late have been driven by optimism over artificial intelligence.

From MarketWatch • Jun. 5, 2026

While the company expressed optimism about items geared toward running, tennis and golf, it said newer, looser-fitting “away from body” fits haven’t had the hoped-for impact.

From MarketWatch • Jun. 5, 2026

The US and Iran have sent divergent messages, with Tehran insisting on steep conditions for progress, even as President Donald Trump again voiced optimism, telling reporters a deal "could happen... over the weekend".

From Barron's • Jun. 4, 2026

In addition, Ford stock’s recent rally has already priced in a lot of optimism.

From Barron's • Jun. 3, 2026

There’s a general mood of optimism about the Russian front, because that’s going great guns!

From "The Diary of a Young Girl" by Anne Frank

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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