CMS

name

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

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

The verdict

“CMS” sits in 20 confusable pairs (corpus #18,042) as a proper noun. The look-alike neighbours are the real trap.

#18,042
frequency rank, English
5,599
“C” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of Chicago Manual of Style.

Corpus desk

Index EN-cms · CMS · English

CMS · rank #18,042 · 0 variants · 20 confusables

  • FREQ-MID #18,042
  • LEN-MID 3 letters
  • VOW-0 0 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH clover

Nearest frequency peer: clover (-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 neighbours of confusable “CMS”

Peers at similar corpus weight, separate from look-alike pairs below

corpus weight

What this shows Bars place “CMS” against nearest ranked English headwords, not a reprint of the confusable-pair desk.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

CMS vs co
0% similar
CMS vs CT
33% similar
CMS vs CR
33% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for CMS
PropertyValue
HeadwordCMS
LanguageEnglish
Part of speechProper noun
Letters3
Frequency rank#18,042
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “CMS”

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).CMSlands here:

#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. Same rarity band neighbours include “clover” (#18,041), “coatings” (#18,043), “clinging” (#18,040). Among 5,599 “C” headwords, “CMS” is #18,042. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for CMS is neighbouring look-alikes ("co", "CT", …), not just typos; it is aproper noun. Frequency #18,042 among 5,599 “C” headwords. 5 recorded senses keep meaning in play.

We couldn't generate a plausible misspelling set for CMS, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "co", "CT", "CR", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Wiktionary doesn't record an etymology for this headword, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is CMS, spelled C-M-S.

Definition

  1. 1
    Initialism of Chicago Manual of Style.
  2. 2
    Initialism of Charlotte Motor Speedway.
  3. 3
    Initialism of Church Mission Society (formerly Church Missionary Society).
  4. 4
    Initialism of Centers for Medicare & Medicaid Services.
  5. 5
    Initialism of Charles Martel Society.

Recorded use

Wiktionary examples

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

  1. “If the FDA grants traditional approval CMS is prepared to ensure anyone with Medicare Part B who meets the criteria is covered,” CMS Administrator Chiquita Brooks-LaSure said in a statement.
  2. The notices sent to staffers in the office suggested that they contact the former director of the office if they had a complaint — but that director died late last year, Karen Shields, a former CMS executive, posted on LinkedIn on Tuesday morning.

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 "CMS"?
"CMS" is spelled C-M-S.
What does "CMS" mean?
As a proper noun, "CMS" means: Initialism of Chicago Manual of Style.
What words are commonly confused with "CMS"?
"CMS" is commonly confused with "co", "CT", "CR". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "CMS" come from?
"CMS" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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 "CMS", not the corpus desk frequency band.

Same letter count

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

bop#18,028elm#18,066EMS#18,068WWW#17,998

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

Source: FrequencyWords open word-frequency list