Nicknames for Castor
7 nicknames, sorted by where they actually get used.
Office-safe
Cas
formal
Cast
formal
Playground-friendly
Casty
casual
Castie
casual
Cay
casual
Caie
casual
Family nicknames
Caskins
endearment
About Castor nicknames: Most parents pick Castor for the full formal sound. Then they reach for a shorter form at home. The office version and the playground version are usually different — that's the split above.