Cassidy

/ˈkæsɪdi/

//ˈkæsɪdi// name

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

"cassidy" is a 7-letter English headword indexed on PlainSpell.

The verdict

“Cassidy” has 9 generated spelling variants in the English index at frequency #15,361. The variants make it a useful spelling check.

#15,361
frequency rank, English
5,599
“C” headwords
9
tracked misspellings
4
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A surname from Irish anglicized from Ó Caiside (“descendant of Caiside”). Caiside is a byname from Irish cas (“curly”) meaning “curly-haired”.

Corpus desk

Index EN-cassidy · Cassidy · English

Cassidy · rank #15,361 · 9 variants · 4 confusables

  • FREQ-MID #15,361
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-MID 4 pairs
  • VAR-MID 9 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH caramel

Nearest frequency peer: caramel (-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.

Rank peers near misspelling magnet “Cassidy”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “Cassidy” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

Cassidy vs Cassie
71% similar
Cassidy vs Cassius
71% similar
Cassidy vs Cassini
71% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for Cassidy
PropertyValue
HeadwordCassidy
LanguageEnglish
Part of speechProper noun
IPA/ˈkæsɪdi/
Letters7
Frequency rank#15,361
Misspellings tracked9
Confusable pairs4
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “Cassidy”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).Cassidylands here:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “caramel” (#15,360), “charismatic” (#15,362), “chromosome” (#15,363). Among 5,599 “C” headwords, “Cassidy” is #15,361. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 9 spelling variants around Cassidy (IPA /ˈkæsɪdi/), aproper noun. Corpus frequency is #15,361 among 5,599 “C” headwords. Wiktionary lists 5 senses, so context still picks the gloss.

Our generated misspelling index lists 9 likely wrong-spelling variants for Cassidy, with forms such as "acssidy", "casidy", and "casisdy". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 4 confusable-pair relationships, "Cassie", "Cassius", "Cassini", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From the Irish surname, Anglicized from Ó Caiside (“descendant of Caiside”), from cas (“curly-haired”). The correct English form is Cassidy, spelled C-A-S-S-I-D-Y.

Definition

  1. 1
    A surname from Irish anglicized from Ó Caiside (“descendant of Caiside”). Caiside is a byname from Irish cas (“curly”) meaning “curly-haired”.
  2. 2
    A surname from Irish, a rare anglicization of Mac Casarlaigh (Casserly).
  3. 3
    A male given name transferred from the surname.
  4. 4
    A female given name transferred from the surname, of modern American usage.
  5. 5
    A community in southern Vancouver Island, British Columbia, Canada.

Etymology

From the Irish surname, Anglicized from Ó Caiside (“descendant of Caiside”), from cas (“curly-haired”).

Common misspellings

Also misspelled as:

  • acssidy
  • casidy
  • casisdy
  • cassdiy
  • cassiddy
  • cassidyy
  • cassiyd
  • ccassidy
  • csasidy

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of Cassidy - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

acssidy2casidy1casisdy2cassdiy2cassiddy1cassidyy1cassiyd2ccassidy1
Edit distance from "Cassidy"

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 "Cassidy"?
"Cassidy" is spelled C-A-S-S-I-D-Y. The IPA pronunciation is /ˈkæsɪdi/.
What does "Cassidy" mean?
As a proper noun, "Cassidy" means: A surname from Irish anglicized from Ó Caiside (“descendant of Caiside”). Caiside is a byname from Irish cas (“curly”) meaning “curly-haired”.
What words are commonly confused with "Cassidy"?
"Cassidy" is commonly confused with "Cassie", "Cassius", "Cassini". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "Cassidy"?
The IPA (International Phonetic Alphabet) transcription for "Cassidy" is /ˈkæsɪdi/. 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 "Cassidy"?
From the Irish surname, Anglicized from Ó Caiside (“descendant of Caiside”), from cas (“curly-haired”). 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 "Cassidy", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

caramel#15,360concede#15,370blazing#15,349convent#15,375

Similar misspelling depth

Headwords with a similar count of attested misspellings (9 here; floor ≥5).

bowler9 variantsBecker9 variantsbanter9 variantsbadger9 variants

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

Source: FrequencyWords open word-frequency list