Cass
Meaning
short form used for Cassandra, Cassidy, Cassia, and other Cass- names
The story
Cass is an English short form rather than one name with one fixed root. It can stand for Cassandra, Cassidy, Cassia, or another name beginning with Cass, and some people use Cass as the complete name. The spelling alone cannot reveal which longer form, if any, belongs to a particular bearer. Its exact US curve is tiny, so there is little American popularity history to narrate. The verified story is compact but useful: Cass connects several longer-name families without requiring any one of them.
The formal names behind Cass
Cass is an established short form of each of these names.
Cassandra · Greek origin · possibly Greek kekasmai "to excel, to surpass" with aner "man"; the Trojan prophetess
Cassidy · Irish origin · surname Ó Caiside, traditionally "curly-haired"
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Cass has stayed rare in US records the whole time: no peak decade to name.
When you meet Cass
People given the name Cass in the United States span the generations: the middle half were born anywhere from 1960 to 2019. Age is the one thing the name won't tell you.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Cass deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Cass truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Cass fits with your family’s names and surname.
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