cosign
/ˈkəʊ.saɪn/
"cosign" is a 6-letter English headword indexed on PlainSpell.
The verdict
“cosign” is uncommon English (frequency #94,715 among 5,599 “C” headwords), classed as a verb. The kind of spelling people second-guess.
- #94,715
- frequency rank, English
- 5,599
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To sign a document jointly with another person, sometimes as an endorsement.
Corpus desk
Index EN-cosign · cosign · English
cosign · rank #94,715 · 0 variants · 0 confusables
- FREQ-RARE #94,715
- LEN-LONG 6 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 5,599
- PHOTO-FINISH Corydon
Nearest frequency peer: Corydon (-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 “cosign”
Sparse band: bars invert rank so rarer forms read shorter
- copay
copay
5,291 corpus weight
- Corydon
Corydon
5,287 corpus weight
- cosign
cosign
5,286 corpus weight
- courser
courser
5,284 corpus weight
- Cowichan
Cowichan
5,283 corpus weight
- Crapo
Crapo
5,281 corpus weight
What this shows Long-tail view: where “cosign” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | cosign |
| Language | English |
| Part of speech | Verb |
| IPA | /ˈkəʊ.saɪn/ |
| Letters | 6 |
| Frequency rank | #94,715 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “cosign” in English
Rare enough to double-check
cosign is uncommon English at frequency #94,715 among 5,599 “C” headwords, classed as averb, transcribed /ˈkəʊ.saɪn/. Rarity is why readers land here mid-draft. 2 senses are on record.
The misspelling generator found no plausible variants for cosign, since its letter pattern doesn't lend itself to common typo substitutions. 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 co- + sign. The correct English form is cosign, spelled C-O-S-I-G-N.
Definition
- 1To sign a document jointly with another person, sometimes as an endorsement.
- 2To agree with or endorse.
Recorded use
Wiktionary exampleThese source excerpts show how cosign appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
[Ilhan] Omar was left twisting in the wind earlier this year after facing spurious charges of antisemitism, a display of Democratic cowardice co-signed by Chelsea Clinton, Chuck Schumer, and most every other Democrat with a congressional leadership position.
Etymology
From co- + sign.
This word in other languages
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 "cosign", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 6 letters (nearest by frequency rank).