Serenity is a girl’s name of French and Latin origins. Meaning “peaceful” and “calm,” Serenity is a virtue name that will inspire baby to live a life of serenity and grace. Or—to go from the sublime to the ridiculous—millennial parents who grew up on Joss Whedon shows will love how the name nods to his cowboys-in-space sci-fi movie Serenity, a spin-off of the cult classic television series Firefly. Whatever your reasons for choosing Serenity, the name will undoubtedly bring baby adventure and aplomb.