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Arcaius

♂ Boy

Pronounced ar-KAY-us /ɑrˈkeɪ.əs/Medium

Meaning: Modern Latinate-style coinage (echoing 'arch-', ruler/chief, and -ius Roman endings); no single fixed rootLow

In 30 seconds: Grand and modern: Arcaius joins an Arc- opening to a Roman -ius ending, echoing 'arch-' (chief/ruler). A bold coinage, regal and striking.

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Origin LowAmerican, Latin

MeaningModern Latinate-style coinage (echoing 'arch-', ruler/chief, and -ius Roman endings); no single fixed root

U.S. rank (2025)#9789 ↘ Falling

2025 U.S. births7 boys (0.00% of U.S. boys)

Peak year2024

Total births (all-time)≈ 29

History & Origin

Arcaius is a modern Latinate-style coinage joining an Arc- opening — echoing 'arch-', chief/ruler — to the Roman -ius ending (which we flag as a recent coinage). It has no single fixed root; the regal sound carries it.

It registers thinly in records. Very rare, a-grand-coinage at the root, and regal.

Did you know? Arcaius brushes Latin/Greek arch- ('chief, ruler', as in archon) with a grand -ius ending — a bold, modern Latinate-style coinage.

Overall data confidence 42%

U.S. Social Security Administration name files — recent emergence

Variations

ArcaiosArkaiusArcaeus

Nicknames

Arc

Famous Bearers

Famous bearers coming soon.

If you like Arcaius…

Aurelius— a companion -ius Roman name

Cassius— another -ius name

Darius— a fellow grand classical name

Atticus— shares the -us ending

Adrius— a fellow American choice

Explore names like Arcaius

By themeuncertain coinage latin

By meaningRoyal / Noble Leader

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Frequently Asked

What does the name Arcaius mean?

Arcaius echoes 'arch-' (ruler/chief) and Roman -ius names; it's a recent coinage, which we flag.

How do you pronounce Arcaius?

It's said ar-KAY-us /ɑrˈkeɪ.əs/ — three syllables, stress on the second.

Is Arcaius a boy or girl name?

Arcaius is a boy's name.

How popular is Arcaius?

Arcaius is a very rare name in the U.S.