Meanings
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1
noun
A tendency to expect the best, or to believe that things will turn out well.
Despite the bad news, she faced the future with optimism.
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2
noun
The belief that good will ultimately win out over evil or hardship.
His optimism that humanity would solve its problems never faded.
Thesaurus
Opposites
Word family
Related forms
optimal
Etymology
From French optimisme, equivalent to Latin optimus + -ism.