couldn't

/ˈkʊd.n̩t/

//ˈkʊd.n̩t// verb

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

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

The verdict

“couldn't” has 12 generated spelling variants in the English index at frequency #844. The variants make it a useful spelling check.

#844
frequency rank, English
43,570
“C” headwords
12
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - could not (negative auxiliary)

Corpus desk

Index EN-couldn-t · couldn't · English

couldn't · rank #844 · 12 variants · 0 confusables

  • FREQ-CORE #844
  • LEN-LONG 8 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-MID 12 variants
  • BOOK-DENSE 43,570
  • PHOTO-FINISH born

Nearest frequency peer: born (-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 “couldn't”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “couldn't” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of May 6, 2026
Key facts for couldn't
PropertyValue
Headwordcouldn't
LanguageEnglish
Part of speechVerb
IPA/ˈkʊd.n̩t/
Letters8
Frequency rank#844
Misspellings tracked12
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “couldn't” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). couldn't lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 12 spelling variants around couldn't (IPA /ˈkʊd.n̩t/), averb. Corpus frequency is #844 among 43,570 “C” headwords. Dominant gloss: "could not (negative auxiliary)".

Our generated misspelling index lists 12 likely wrong-spelling variants for couldn't, with forms such as "ccouldn't", "coludn't", and "coudln't". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. Our confusable-pair dataset has no match for it, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From could + n’t. The correct English form is couldn't, spelled C-O-U-L-D-N-'-T.

Definition

  1. 1
    could not (negative auxiliary)

Recorded use

Wiktionary examples

These source excerpts show how couldn't appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. You couldn’t lend me a lighter, could you?
  2. ‘Would you like another drink?’ ‘No thanks, I couldn’t.’

Etymology

From could + n’t.

Common misspellings

Also misspelled as:

  • ccouldn't
  • coludn't
  • coudln't
  • could'nt
  • coulddn't
  • couldn'tt
  • couldnn't
  • couldnt'
  • coulldn't
  • coulnd't
  • cuoldn't
  • oculdn't

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of couldn't - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

ccouldn't1coludn't2coudln't2could'nt2coulddn't1couldn'tt1couldnn't1couldnt'2
Edit distance from "couldn't"

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 May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "couldn't"?
"couldn't" is spelled C-O-U-L-D-N-'-T. The IPA pronunciation is /ˈkʊd.n̩t/.
What does "couldn't" mean?
As a verb, "couldn't" means: could not (negative auxiliary)
What are common misspellings of "couldn't"?
Common misspellings include "ccouldn't", "coludn't", "coudln't", "could'nt", "coulddn't". The correct spelling is "couldn't".
How do you pronounce "couldn't"?
The IPA (International Phonetic Alphabet) transcription for "couldn't" is /ˈkʊd.n̩t/. 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 "couldn't"?
From could + n’t. 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 "couldn't", not the corpus desk frequency band.

Same letter count

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

decision#847November#833language#831involved#829

Similar misspelling depth

Headwords with a similar count of attested misspellings (12 here; floor ≥5).

complete12 variantselection12 variantsattention12 variantsdaughter12 variants
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.

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

Source: FrequencyWords open word-frequency list