Costello
/kɑˈstɛloʊ/
"costello" is a 8-letter English headword indexed on PlainSpell.
The verdict
“Costello” has 10 generated spelling variants in the English index at frequency #19,800. The variants make it a useful spelling check.
- #19,800
- frequency rank, English
- 5,599
- “C” headwords
- 10
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A surname from Irish.
Corpus desk
Index EN-costello · Costello · English
Costello · rank #19,800 · 10 variants · 1 confusable
- FREQ-MID #19,800
- LEN-LONG 8 letters
- VOW-3 3 vowels
- CONFUS-LOW 1 pairs
- VAR-MID 10 variants
- BOOK-DENSE 5,599
- PHOTO-FINISH corrective
Nearest frequency peer: corrective (-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.
Frequency neighbourhood for “Costello”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- construed
construed
80,204 corpus weight
- consular
consular
80,203 corpus weight
- corrective
corrective
80,202 corpus weight
- Costello
Costello
80,201 corpus weight
- coworker
coworker
80,200 corpus weight
- crumble
crumble
80,199 corpus weight
What this shows Bars show where “Costello” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | Costello |
| Language | English |
| Part of speech | Proper noun |
| IPA | /kɑˈstɛloʊ/ |
| Letters | 8 |
| Frequency rank | #19,800 |
| Misspellings tracked | 10 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Where “Costello” sits in English frequency
A misspelling magnet
The generator records 10 spelling variants around Costello (IPA /kɑˈstɛloʊ/), aproper noun. Corpus frequency is #19,800 among 5,599 “C” headwords. Wiktionary lists 2 senses, so context still picks the gloss.
Our generated misspelling index lists 10 likely wrong-spelling variants for Costello, with forms such as "ccostello", "cosetllo", and "cosstello". 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 1 confusable-pair relationship, "Castillo", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: Reduced Anglicized form of Irish Mac Oisdealbhaigh (“son of Oisdealbhach”), a personal name composed of the elements os (“deer”) and dealbhach (“resembling, in the form of”). The correct English form is Costello, spelled C-O-S-T-E-L-L-O.
Definition
- 1A surname from Irish.
- 2A locality in the Barkly Region, Northern Territory, Australia, named after John Costello (pastoralist).
Etymology
Reduced Anglicized form of Irish Mac Oisdealbhaigh (“son of Oisdealbhach”), a personal name composed of the elements os (“deer”) and dealbhach (“resembling, in the form of”).
Common misspellings
Also misspelled as:
- ccostello
- cosetllo
- cosstello
- costelo
- costelol
- costlelo
- costtello
- cotsello
- csotello
- ocstello
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of Costello - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
How do you spell "Costello"?
What does "Costello" mean?
What words are commonly confused with "Costello"?
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What is the origin of the word "Costello"?
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "Costello", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 8 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (10 here; floor ≥5).
What to do next
You've looked up "Costello". Here's where to go from here.
- This headword has one recorded confusable pair with "Castillo". View pair
- 10 edit-distance misspelling variants are generated for spell-check research on this headword. See variants
- Usage frequency rank #19,800 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "C" letter cohort. C–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.