Serenity
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The meaning of the name Serenity is Peaceful Disposition
The origin of the name Serenity is English
Alternate spellings: Serenitie, Cirrenitee
Notes:
To be serene is to be calm and peaceful in disposition. It is derived from the Old French serenite, from Latin serenitas/serenus meaning "clear, fair."
Serenity is an English dictionary word and an expectation name. It's also the name of a movie based on the television series, Firefly.