Caius

\ˈkeɪ.əs\

/\ˈkeɪ.əs\/ name

The verdict

“Caius” is uncommon French (frequency #58,470 among 8,609 “C” headwords), classed as a proper noun. The kind of spelling people second-guess.

#58,470
frequency rank, French
8,609
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Prénom masculin.

Corpus desk

Index FR-caius · Caius · French

Caius · rank #58,470 · 0 variants · 0 confusables

  • FREQ-RARE #58,470
  • LEN-MID 5 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 8,609
  • PHOTO-FINISH cadettes

Nearest frequency peer: cadettes (-1 rank slots)

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Rangs de longue queue près de « Caius »

Bande clairsemée: les barres inversent le rang pour que le rare se lise plus court

corpus weight

What this shows Vue de longue queue: où « Caius » se situe face à des rangs français aussi rares.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for Caius
PropertyValue
HeadwordCaius
LanguageFrench
Part of speechProper noun
IPA\ˈkeɪ.əs\
Letters5
Frequency rank#58,470
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « Caius » en français

Cette échelle va du noyau du français courant (gauche) jusqu'à la traîne des formes rares (droite).Caiustombe dans cette queue de rareté:

#1#100#1K#10K#100K
← used constantlyrarely used →

Les tics avancent en logarithme; chacun est de l'ordre de dix fois plus rare. Voisins rares de la même bande: « cadettes » (#58,469), « caliente » (#58,471), « Béninoise » (#58,468). Parmi 8,609 lemmes en « C », « Caius » est au #58,470. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

Caius is uncommon French at frequency #58,470 among 8,609 “C” headwords, classed as aproper noun, transcribed \ˈkeɪ.əs\. Rarity is why readers land here mid-draft. Gloss: "Prénom masculin.".

Caius doesn't appear in our generated misspelling index, a straightforward case of a spelling with little room for common typos. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.

This entry carries no recorded etymology, so its spelling is best read as a straightforward mapping from sound to letter. The correct French form is Caius, spelled C-A-I-U-S.

Definition

  1. 1
    Prénom masculin.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Caius"?
"Caius" is spelled C-A-I-U-S. The IPA pronunciation is \ˈkeɪ.əs\.
What does "Caius" mean?
As a proper noun, "Caius" means: Prénom masculin.
How do you pronounce "Caius"?
The IPA (International Phonetic Alphabet) transcription for "Caius" is \ˈkeɪ.əs\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "Caius" come from?
"Caius" is a French word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar French words by spelling shape

Same letter count and similar misspelling depth for "Caius", not the corpus desk frequency band.

Same letter count

Frequency-ranked French headwords with 5 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list