cocksure

adj

"cocksure" is a 8-letter English headword indexed on PlainSpell.

The verdict

“cocksure” is uncommon English (frequency #95,839 among 5,599 “C” headwords), classed as an adjective. The kind of spelling people second-guess.

#95,839
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Too confident; overconfident.

Corpus desk

Index EN-cocksure · cocksure · English

cocksure · rank #95,839 · 0 variants · 0 confusables

  • FREQ-RARE #95,839
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH cochineal

Nearest frequency peer: cochineal (-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 “cocksure”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for cocksure
PropertyValue
Headwordcocksure
LanguageEnglish
Part of speechAdjective
Letters8
Frequency rank#95,839
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “cocksure” 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).cocksurefalls 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: “cochineal” (#95,838), “cobby” (#95,837), “cohere” (#95,841). Among 5,599 “C” headwords, “cocksure” is #95,839. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

cocksure is uncommon English at frequency #95,839 among 5,599 “C” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Too confident; overconfident.".

Zero misspellings are on record for cocksure in our index, a straightforward case of a spelling with little room for common typos. We don't track a confusable pairing for this entry, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: Probably from cock + sure, early 16th c. The correct English form is cocksure, spelled C-O-C-K-S-U-R-E.

Definition

  1. 1
    Too confident; overconfident.

Recorded use

Wiktionary examples

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

  1. I thought myself cocksure of his horse, which he readily promis'd me.
  2. The persistence of the Past is one of those tragicomic blessings which each new age denies, coming cocksure on to the stage to mouth its claim to a perfect novelty.

Etymology

Probably from cock + sure, early 16th c.

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 "cocksure"?
"cocksure" is spelled C-O-C-K-S-U-R-E.
What does "cocksure" mean?
As an adjective, "cocksure" means: Too confident; overconfident.
What is the origin of the word "cocksure"?
Probably from cock + sure, early 16th c. 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 "cocksure", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list