cwm

/kuːm/

//kuːm// noun

"cwm" is a 3-letter English headword indexed on PlainSpell.

The verdict

“cwm” is uncommon English (frequency #65,030 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.

#65,030
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A valley head created through glacial erosion and with a shape similar to an amphitheatre.

Corpus desk

Index EN-cwm · cwm · English

cwm · rank #65,030 · 0 variants · 0 confusables

  • FREQ-RARE #65,030
  • LEN-MID 3 letters
  • VOW-0 0 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH cutlets

Nearest frequency peer: cutlets (-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 “cwm”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for cwm
PropertyValue
Headwordcwm
LanguageEnglish
Part of speechNoun
IPA/kuːm/
Letters3
Frequency rank#65,030
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “cwm” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).cwmfalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “cutlets” (#65,029), “cyberattack” (#65,031), “curvaceous” (#65,028). Among 5,599 “C” headwords, “cwm” is #65,030. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

cwm is uncommon English at frequency #65,030 among 5,599 “C” headwords, classed as anoun, transcribed /kuːm/. Rarity is why readers land here mid-draft. Gloss: "A valley head created through glacial erosion and with a shape similar to an amphitheatre.".

cwm has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: Unadapted borrowing from Welsh cwm (“valley”). Doublet of combe. The correct English form is cwm, spelled C-W-M.

Definition

  1. 1
    A valley head created through glacial erosion and with a shape similar to an amphitheatre.

Recorded use

Wiktionary example

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

  1. A fine glacier descends from Mount Longstaff. It has cut very deep and the walls stand at an angle of at least 50°. Otherwise, although there are many cwms on the lower ranges, the mountains themselves seem little carved.

Etymology

Unadapted borrowing from Welsh cwm (“valley”). Doublet of combe.

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

How do you spell "cwm"?
"cwm" is spelled C-W-M. The IPA pronunciation is /kuːm/.
What does "cwm" mean?
As a noun, "cwm" means: A valley head created through glacial erosion and with a shape similar to an amphitheatre.
How do you pronounce "cwm"?
The IPA (International Phonetic Alphabet) transcription for "cwm" is /kuːm/. 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 "cwm"?
Unadapted borrowing from Welsh cwm (“valley”). Doublet of combe. 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 "cwm", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list