Nicknames for Casimir
3 nicknames, sorted by where they actually get used.
Office-safe
Cas
formal
Caz
formal
Playground-friendly
Cassi
casual
Casimir carries 3 documented short forms — Cas, Caz, and Cassi — drawn from its Polish-origin roots. The list splits into 2 office-safe picks and 1 playground-friendly option so you can match the moment.