Meaning & Origin
A female given name from Latin, from the medieval vernacular form of Cecilia.
Cecily is a girl's baby name of Latin origin, the medieval English form of Cecilia, from the Roman family name Caecilius meaning 'blind' — though tradition associates it with the patroness of music, Saint Cecilia, who sang to God in her heart even as she was martyred. Cecily was the medieval vernacular form used in England from the Norman Conquest onward.
Cecily has a playful literary quality — it's the name in Oscar Wilde's The Importance of Being Earnest, where Cecily Cardew is the charming, idealistic ward who insists on marrying a man named Ernest. It's formal enough for a birth certificate, friendly enough for an Oscar Wilde comedy.