Cassiopeia

/ˌkæs.i.əˈpiː.ə/

//ˌkæs.i.əˈpiː.ə// name

By · According to Wiktionary data (CC BY-SA) ·

"cassiopeia" is a 10-letter English headword indexed on PlainSpell.

The verdict

“Cassiopeia” is uncommon English (frequency #60,699 among 5,599 “C” headwords), classed as a proper noun. The kind of spelling people second-guess.

#60,699
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Proud wife of Cepheus and mother of Andromeda, queen of Ethiopia. When she boasted that her beauty was equal to that of the Nereids, she was punished by Poseidon.

Corpus desk

Index EN-cassiopeia · Cassiopeia · English

Cassiopeia · rank #60,699 · 0 variants · 0 confusables

  • FREQ-RARE #60,699
  • LEN-MEGA 10 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH caseworker

Nearest frequency peer: caseworker (-1 rank slots)

Read with this headword: Spelling guide for this pattern

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.

Long-tail ranks near “Cassiopeia”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “Cassiopeia” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for Cassiopeia
PropertyValue
HeadwordCassiopeia
LanguageEnglish
Part of speechProper noun
IPA/ˌkæs.i.əˈpiː.ə/
Letters10
Frequency rank#60,699
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “Cassiopeia” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).Cassiopeiafalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “caseworker” (#60,698), “castell” (#60,700), “Carlow” (#60,697). Among 5,599 “C” headwords, “Cassiopeia” is #60,699. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

Cassiopeia is uncommon English at frequency #60,699 among 5,599 “C” headwords, classed as aproper noun, transcribed /ˌkæs.i.əˈpiː.ə/. Rarity is why readers land here mid-draft. 3 senses are on record.

Zero misspellings are on record for Cassiopeia in our index, typically a sign the spelling maps closely to how the word sounds. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Latin Cassiopēia, from Ancient Greek Κασσιόπεια (Kassiópeia) or Κασσιόπη (Kassiópē). The correct English form is Cassiopeia, spelled C-A-S-S-I-O-P-E-I-A.

Definition

  1. 1
    Proud wife of Cepheus and mother of Andromeda, queen of Ethiopia. When she boasted that her beauty was equal to that of the Nereids, she was punished by Poseidon.
  2. 2
    A circumpolar constellation of the northern sky representing Queen Cassiopeia from Greek myth, lying between the constellations Cepheus and Perseus.
  3. 3
    A female given name from Latin [in turn from Ancient Greek], of rare usage.

Recorded use

Wiktionary examples

These source excerpts show how Cassiopeia appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Meronyms: Achird, Caph, Fulu, Ruchbah, Schedar, Segin
  2. Beyond a doubt, Miss Cassiopeia Jane Slodge was the belle of the room; […]

Etymology

From Latin Cassiopēia, from Ancient Greek Κασσιόπεια (Kassiópeia) or Κασσιόπη (Kassiópē).

This word in other languages

Casiopea(Español)Cassiopée(Français)

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 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Cassiopeia"?
"Cassiopeia" is spelled C-A-S-S-I-O-P-E-I-A. The IPA pronunciation is /ˌkæs.i.əˈpiː.ə/.
What does "Cassiopeia" mean?
As a proper noun, "Cassiopeia" means: Proud wife of Cepheus and mother of Andromeda, queen of Ethiopia. When she boasted that her beauty was equal to that of the Nereids, she was punished by Poseidon.
How do you pronounce "Cassiopeia"?
The IPA (International Phonetic Alphabet) transcription for "Cassiopeia" is /ˌkæs.i.əˈpiː.ə/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "Cassiopeia"?
From Latin Cassiopēia, from Ancient Greek Κασσιόπεια (Kassiópeia) or Κασσιόπη (Kassiópē). See the full etymology section above for more details.
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 English words by spelling shape

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

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

caseworker#60,698cavitation#60,702cantonment#60,690bobblehead#60,662

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

Source: FrequencyWords open word-frequency list