Of Latin origin.
From the Latin words “serenitatem”, “serenus”, meaning “calm”, “clear”.
The English word means “serenity” and “tranquility”.
In the 15th century, it was used as a title of honor for kings and popes.
Alternative forms of the name are Serenidy, Serinity, Serenitey.
Serenity entered the United States Social Security names list in 1997 and is now ranked #71.