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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.

Until Tuesday’s selloff, stocks had managed a bit of a rally despite a further climb in oil prices, suggesting some optimism that the surge in crude prices might be temporary.

From MarketWatch • Apr. 7, 2026

If he can do that, the greatest legacy he can leave on America’s anniversary is restoring America’s optimism about its future and the next generation.

From The Wall Street Journal • Apr. 7, 2026

Another factor that may test investor optimism this week is the fact that the S&P 500 has yet to reclaim its 200-day moving average of 6624, a key data point used for predicting future performance.

From Barron's • Apr. 6, 2026

But 92 minutes in Manchester quickly did for any such optimism, with the number of potential trophies that might garnish Salah's farewell swiftly halved.

From BBC • Apr. 4, 2026

He stayed locked in his work, for the most part undaunted, riding out the bumps and compromising where he could, clinging to the sober-minded, someone’s-gotta-take-this-on brand of optimism that had always guided him.

From "Becoming" by Michelle Obama