Cassius — Meaning, Origin & Everything to Know
Cassius: a Latin name meaning 'hollow; vain (a Roman family name)'.
Cassius is a Latin name whose meaning — 'hollow; vain (a Roman family name)' — gives it a quiet depth beyond its sound. As a son's name, Cassius suggests resilience, power and steadfastness and travels comfortably across languages. Because it rests on Latin rather than passing fashion, Cassius carries a sense of history that many parents look for.
| Name | Cassius |
|---|---|
| Meaning | Cassius means 'hollow; vain (a Roman family name)', a sense it draws straight from its Latin roots |
| Origin | Latin |
| Language | Latin |
| Gender | Boy |
| Numerology number | 1 |
| Pronunciation | CAS-sius |
| Popularity tier | Tier 3 |
What Does the Name Cassius Mean?
Cassius means 'hollow; vain (a Roman family name)', a sense it draws straight from its Latin roots.
Historically, Cassius took shape among Latin speakers, for whom naming a son was an act of meaning. As it travelled, Cassius kept its 'hollow; vain (a Roman family name)' sense intact, handed down to honour relatives and express a hope for the child.
In current use, Cassius sits easily in any classroom or workplace while still carrying its original idea of 'hollow; vain (a Roman family name)'. The result is a name in Cassius that feels both usable and meaningful — its appeal in the 2020s in a nutshell.
Symbolically, Cassius leans toward resilience, power and steadfastness, with its Latin roots adding heritage to that idea.
Origin & Etymology of Cassius
Latin · Latin
Cassius comes from Latin, where it means 'hollow; vain (a Roman family name)'. When families carried the Latin tradition abroad, Cassius went too, picking up minor spelling shifts without losing 'hollow; vain (a Roman family name)'.
Cassius holds a meaningful place in the Latin tradition, its sense of resilience, power and steadfastness tied to long-standing cultural values.
How Latin names are chosen
Rome gave a child its given name at the dies lustricus, a purification held on the eighth day for a girl and the ninth for a boy. The delay was deliberate: until the umbilical stump fell away the infant was not regarded as having a separate existence, and so had no claim on a name or a fate of its own. The ceremony washed the child, presented it at the lararium before the household gods, and ended in a family feast. The praenomen given that day was only the first of the tria nomina — praenomen, nomen, cognomen — the three-part structure that marks Roman naming out from almost everything around it.
How to Pronounce Cassius
CAS-sius — A simple guide for Cassius is CAS-sius. It is said much as it looks, with the emphasis on the opening syllable.
Popularity of the Name Cassius
In terms of usage, Cassius is on the way up, most associated with the 2020s.
Popularity trends are based on historical naming pattern data and updated periodically, not real-time rankings.
Personality Traits Associated with Cassius
The name Cassius tends to bring dependable, resilient associations to mind. Those impressions trace back partly to 'hollow; vain (a Roman family name)' and partly to how Cassius sits in the mouth. In the traditions that link names to temperament, Cassius lands on the side of resilience, power and steadfastness. None of this overrides the individual, of course — but if a name's signal matters to you, Cassius reads warm rather than harsh, which is part of why it resonates.
Cassius Numerology
The name Cassius carries the numerology number 1.
The numerology number for Cassius is 1: the Leader — independence and drive. Tradition holds that a 1 shapes someone's natural motivations and way of relating to others. Paired with Cassius's sense of 'hollow; vain (a Roman family name)', that 1 gives numerology-minded parents extra to consider.
Cassius & Zodiac Connection
If you like to pair names with star signs, Cassius leans toward determined Capricorn and bold Aries. Curious how a baby named Cassius might pair with their actual star sign?
Curious what your baby's zodiac sign reveals? Explore GetMyHoro →
Nicknames for Cassius
Cash, Cass
Names Similar to Cassius
Sibling Names That Go With Cassius
- Cassius & Atticus — A like-minded match in feel for Cassius.
- Cassius & Augustus — Pairs naturally with Cassius without echoing it.
- Cassius & Marcus — Shares a complementary sound and style with Cassius.
- Cassius & Ethan — Sits comfortably beside Cassius as a sibling name.
- Cassius & Benjamin — A like-minded match in feel for Cassius.
- Cassius & Gabriel — Pairs naturally with Cassius without echoing it.
Middle Names for Cassius
Cassius James · Cassius Hugh · Cassius Daniel · Cassius Thomas · Cassius Reed · Cassius Cole
What's your favourite thing about the name Cassius?
How much do you like the name Cassius?
3.9 / 5 · 577 ratings
Want a personalised naming consultation?
Our Personal Baby Naming Report factors in your surname, sibling names, cultural preferences and numerology all together — not a generic list.
Get your report — €9.99Frequently Asked Questions
+What does the name Cassius mean?
Cassius means 'hollow; vain (a Roman family name)'. It comes from Latin and is linked with resilience, power and steadfastness, which makes it a meaningful choice for a son.
+What is the origin of Cassius?
Cassius is Latin in origin, from Latin.
+What is the numerology number for Cassius?
In Pythagorean numerology Cassius reduces to 1 — the Leader — independence and drive.
+Is Cassius a popular name?
Cassius has been rising in popularity, with its strongest momentum in the 2020s.
+Is Cassius suitable for any gender?
Cassius is most often used as a boy's name, though naming is personal and the meaning 'hollow; vain (a Roman family name)' suits any child.
+What are good nicknames for Cassius?
Common nicknames for Cassius include Cash, Cass; families also invent their own at home.
+What names pair well with Cassius for a sibling?
Names such as Atticus, Augustus, Marcus sit well beside Cassius, sharing a complementary style.