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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.

Even so, there is a curious — and hopefully not delusional — optimism in classical music, L.A. style.

From Los Angeles Times • Apr. 3, 2026

Few in private equity started 2026 with great optimism about their industry’s fundraising prospects.

From The Wall Street Journal • Apr. 3, 2026

The world’s largest cryptocurrency wasn’t quite able to reach the $70,000 mark in recent days despite optimism over a cease-fire and larger moves in other risk assets.

From Barron's • Apr. 2, 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

As First Lady, I saw optimism in surprising places.

From "Becoming" by Michelle Obama

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.