Meanings
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1
adj
optimistic or cheerfully confident, especially in a difficult situation
Despite the setbacks, she remained sanguine about the project's prospects.
Thesaurus
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Word family
Derived forms
sanguinelysanguinenesssanguinity
Etymology
From Old French sanguin, from Latin sanguineus ('of blood'), from sanguis (stem sanguin-) 'blood'; the optimistic sense comes from medieval humoral theory, in which a blood-dominant temperament was cheerful.
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