costar
/ˈkəʊstɑː(ɹ)/
"costar" is a 6-letter English headword indexed on PlainSpell.
The verdict
“costar” is uncommon English (frequency #57,308 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.
- #57,308
- frequency rank, English
- 5,599
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A person who shares star billing with another.
Corpus desk
Index EN-costar · costar · English
costar · rank #57,308 · 0 variants · 0 confusables
- FREQ-RARE #57,308
- LEN-LONG 6 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 5,599
- PHOTO-FINISH coster
Nearest frequency peer: coster (+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 “costar”
Sparse band: bars invert rank so rarer forms read shorter
- concoct
concoct
42,700 corpus weight
- cooing
cooing
42,697 corpus weight
- costar
costar
42,693 corpus weight
- coster
coster
42,692 corpus weight
- creosote
creosote
42,689 corpus weight
- crumbly
crumbly
42,688 corpus weight
What this shows Long-tail view: where “costar” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | costar |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈkəʊstɑː(ɹ)/ |
| Letters | 6 |
| Frequency rank | #57,308 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “costar” in English
Rare enough to double-check
costar is uncommon English at frequency #57,308 among 5,599 “C” headwords, classed as anoun, transcribed /ˈkəʊstɑː(ɹ)/. Rarity is why readers land here mid-draft. 2 senses are on record.
The misspelling generator found no plausible variants for costar, a sign its spelling follows regular English conventions. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From co- + star. The correct English form is costar, spelled C-O-S-T-A-R.
Definition
- 1A person who shares star billing with another.
- 2A person who slightly lacks the status to be considered a star.
Recorded use
Wiktionary examplesThese source excerpts show how costar appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The once famous actor objected to his costar having a bigger dressing room.
Alas, always a costar but never a star.
Etymology
From co- + star.
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "costar", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 6 letters (nearest by frequency rank).