comorbidity

/ˌkəʊmɔː(ɹ)ˈbɪdɪti/

//ˌkəʊmɔː(ɹ)ˈbɪdɪti// noun

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

"comorbidity" is a 11-letter English headword indexed on PlainSpell.

The verdict

“comorbidity” is uncommon English (frequency #73,971 among 43,570 “C” headwords), classed as a noun. The kind of spelling people second-guess.

#73,971
frequency rank, English
43,570
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The presence of one or more disorders (or diseases) in addition to a primary disease or disorder.

Key facts for comorbidity
PropertyValue
Headwordcomorbidity
LanguageEnglish
Part of speechNoun
IPA/ˌkəʊmɔː(ɹ)ˈbɪdɪti/
Letters11
Frequency rank#73,971
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “comorbidity” 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). comorbidity lands here:

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

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

Rare enough to double-check

comorbidity is uncommon English at frequency #73,971 among 43,570 “C” headwords, classed as anoun, transcribed /ˌkəʊmɔː(ɹ)ˈbɪdɪti/. Rarity is why readers land here mid-draft. 3 senses are on record.

No misspelling variants are generated for comorbidity in our index, typically a sign the spelling maps closely to how the word sounds. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From co- + morbidity or comorbid + -ity. The correct English form is comorbidity, spelled C-O-M-O-R-B-I-D-I-T-Y.

Definition

  1. 1
    The presence of one or more disorders (or diseases) in addition to a primary disease or disorder.
  2. 2
    A disease thus coexisting.
  3. 3
    The effect of such additional disorders or diseases.

Etymology

From co- + morbidity or comorbid + -ity.

Synonyms

comorbid conditionco-morbid condition

This word in other languages

comorbidité(Français)Komorbidität(Deutsch)comorbidade(Português)

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 "comorbidity"?
"comorbidity" is spelled C-O-M-O-R-B-I-D-I-T-Y. The IPA pronunciation is /ˌkəʊmɔː(ɹ)ˈbɪdɪti/.
What does "comorbidity" mean?
As a noun, "comorbidity" means: The presence of one or more disorders (or diseases) in addition to a primary disease or disorder.
How do you pronounce "comorbidity"?
The IPA (International Phonetic Alphabet) transcription for "comorbidity" is /ˌkəʊmɔː(ɹ)ˈbɪdɪti/. 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 "comorbidity"?
From co- + morbidity or comorbid + -ity. 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.

Using “comorbidity”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is C-O-M-O-R-B-I-D-I-T-Y - every other letter order is a misspelling in standard orthography.
  • Say it as /ˌkəʊmɔː(ɹ)ˈbɪdɪti/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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 FrequencyWords open word-frequency list