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English definition of “serene”

serene

adjective    /səˈrin/
peaceful and calm, or (of a person) not worried or excited: He approached the job with the serene confidence that he could succeed where others had failed. serenity    /səˈren·ɪ·t̬i/ noun [U] He wrote of the beauty and serenity of the great river.
(Definition of serene adjective from the Cambridge Academic Content Dictionary © Cambridge University Press)
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