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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.

Also, the rise in U.S. stocks on Wednesday may have been driven partly by traders unwinding short positions, meaning it’s not just about bullish optimism.

From MarketWatch • Apr. 9, 2026

For the first time in years, the state GOP is riding into its convention this weekend on a wave of optimism about the upcoming gubernatorial race.

From Los Angeles Times • Apr. 9, 2026

The DXY dollar index fell 1% to 98.86, having hit a one-month low of 98.685 earlier on optimism about peace in the Middle East following the announcement of the two-week cease-fire.

From The Wall Street Journal • Apr. 8, 2026

A Malian security source voiced optimism for restoring cooperation but said the United States wanted exclusivity in operating in security areas where Russia and China may be involved.

From Barron's • Apr. 8, 2026

“It is a pity there is no way to tell in advance how much optimism is the correct amount,” she thought as she pinned her dull, drab locks into a dull, drab bun.

From "The Hidden Gallery" by Maryrose Wood