carbonyl

Name: carbonyl, English Word Data
Creator: Wiktionary
License: https://creativecommons.org/licenses/by-sa/4.0/

/ˈkɑː(ɹ)bənɪl/

//ˈkɑː(ɹ)bənɪl// noun

By PlainSpell · According to Wiktionary data (CC BY-SA) · analyzed September 3, 2026

The verdict

“carbonyl” has 13 generated spelling variants in the English index at frequency #49,243. The variants make it a useful spelling check.

#49,243
frequency rank, English: 5,599
“C” headwords: 13
tracked misspellings: 1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A divalent functional group, (-CO-), characteristic of aldehydes, ketones, carboxylic acids, amides, carboxylic acid anhydrides, carbonyl halides, esters and others.

Corpus desk

Index EN-carbonyl · carbonyl · English

carbonyl · rank #49,243 · 13 variants · 1 confusable

FREQ-MID #49,243
LEN-LONG 8 letters
VOW-3 3 vowels
CONFUS-LOW 1 pairs
VAR-HIGH 13 variants
BOOK-DENSE 5,599
PHOTO-FINISH Cardenas

Nearest frequency peer: Cardenas (+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.

burnished

50,766
butchery

50,764
Calloway

50,760
carbonyl

50,758
Cardenas

50,757
catty

50,755

What this shows “carbonyl” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Visual similarity to commonly confused words

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

carbonyl vs carbon

75% similar

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

Key facts for carbonyl
Property	Value
Headword	carbonyl
Language	English
Part of speech	Noun
IPA	/ˈkɑː(ɹ)bənɪl/
Letters	8
Frequency rank	#49,243
Misspellings tracked	13
Confusable pairs	1
Source	Wiktionary (kaikki.org)

Frequency seat of misspelling magnet “carbonyl”

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).carbonyllands here:

#49,243

#1#100#1K#10K#100K

← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “Cardenas” (#49,244), “Calloway” (#49,241), “catty” (#49,246). Among 5,599 “C” headwords, “carbonyl” is #49,243. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 13 spelling variants around carbonyl (IPA /ˈkɑː(ɹ)bənɪl/), anoun. Corpus frequency is #49,243 among 5,599 “C” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 13 likely wrong-spelling variants for carbonyl, with forms such as "acrbonyl", "cabronyl", and "carbbonyl". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 1 confusable-pair relationship, "carbon", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From carbon + -yl. The correct English form is carbonyl, spelled C-A-R-B-O-N-Y-L.

Definition

1
A divalent functional group, (-CO-), characteristic of aldehydes, ketones, carboxylic acids, amides, carboxylic acid anhydrides, carbonyl halides, esters and others.
2
Any compound of a metal with carbon monoxide, such as nickel carbonyl, Ni(CO)₄.

Etymology

From carbon + -yl.

This word in other languages

Carbonyl(Deutsch)

Common misspellings

Also misspelled as:

acrbonyl
cabronyl
carbbonyl
carbnoyl
carbonly
carbonnyl
carbonyll
carbonyyl
carboynl
carobnyl
carrbonyl
ccarbonyl
crabonyl

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of carbonyl - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

Edit distance from "carbonyl"

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 "carbonyl"?

"carbonyl" is spelled C-A-R-B-O-N-Y-L. The IPA pronunciation is /ˈkɑː(ɹ)bənɪl/.

What does "carbonyl" mean?

As a noun, "carbonyl" means: A divalent functional group, (-CO-), characteristic of aldehydes, ketones, carboxylic acids, amides, carboxylic acid anhydrides, carbonyl halides, esters and others.

What words are commonly confused with "carbonyl"?

"carbonyl" is commonly confused with "carbon". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.

How do you pronounce "carbonyl"?

The IPA (International Phonetic Alphabet) transcription for "carbonyl" is /ˈkɑː(ɹ)bənɪl/. 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 "carbonyl"?

From carbon + -yl. 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 "carbonyl", not the corpus desk frequency band.

Same letter count

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

Cardenas#49,244 Calloway#49,241 butchery#49,237 Cotswold#49,265

Similar misspelling depth

Headwords with a similar count of attested misspellings (13 here; floor ≥5).

Dionysius13 variants disavowed13 variants domiciled13 variants ameliorate13 variants