Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “optimism”

See all translations

optimism

noun [U] uk   /ˈɒp.tɪ.mɪ.zəm/ us    /ˈɑːp.tə-/
C2 the quality of being full of hope and emphasizing the good parts of a situation, or a belief that something good will happen: There was a note of optimism in his voice as he spoke about the company's future. Judging from your exam results, I think you have cause/grounds/reason for cautious optimism about getting a university place.
Opposite
More examples
Translations of “optimism”
in Korean 낙천주의…
in Arabic تَفاؤل…
in French optimisme…
in Turkish iyimserlik…
in Italian ottimismo…
in Chinese (Traditional) 樂觀, 樂觀主義…
in Russian оптимизм…
in Polish optymizm…
in Spanish optimismo…
in Portuguese otimismo…
in German der Optimismus…
in Catalan optimisme…
in Japanese 楽観主義…
in Chinese (Simplified) 乐观, 乐观主义…
(Definition of optimism from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of optimism?
Add Cambridge dictionaries to your browser to your website

More meanings of “optimism”

Definitions of “optimism” in other dictionaries

Word of the Day

glacial

made or left by a glacier

Word of the Day

Let’s celebrate! (words and phrases for parties)

by Kate Woodford,
December 17, 2014
​​​ With Christmas and New Year almost upon us, we thought it a good time to look at the language of parties and celebrations. First, let’s start with the word ‘party’ itself. To have or throw a party or, less commonly, to give a party is to arrange a party: We’re having a

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More