autoimmunity

/ˌɔː.təʊ.ɪˈmjuː.nɪ.ti/

//ˌɔː.təʊ.ɪˈmjuː.nɪ.ti// noun

"autoimmunity" is a 12-letter English headword indexed on PlainSpell.

The verdict

“autoimmunity” is an uncommon English word, ranked #75,623 in English word frequency and used as a noun.

#75,623
frequency rank, English
12
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The condition where one's immune system attacks one's own tissues, i.e., an autoimmune disorder.

Key facts for autoimmunity
PropertyValue
Headwordautoimmunity
LanguageEnglish
Part of speechNoun
IPA/ˌɔː.təʊ.ɪˈmjuː.nɪ.ti/
Letters12
Frequency rank#75,623
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “autoimmunity” 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). autoimmunity lands here:

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

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

Spelling & Dictionary Insight

The English entry for autoimmunity is 12 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˌɔː.təʊ.ɪˈmjuː.nɪ.ti/. Corpus data places it at rank #75,623 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "The condition where one's immune system attacks one's own tissues, i.e., an autoimmune disorder.".

Zero misspellings are on record for autoimmunity in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From auto- + immunity. The correct English form is autoimmunity, spelled A-U-T-O-I-M-M-U-N-I-T-Y.

Definition

  1. 1
    The condition where one's immune system attacks one's own tissues, i.e., an autoimmune disorder.

Etymology

From auto- + immunity.

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 "autoimmunity"?
"autoimmunity" is spelled A-U-T-O-I-M-M-U-N-I-T-Y. The IPA pronunciation is /ˌɔː.təʊ.ɪˈmjuː.nɪ.ti/.
What does "autoimmunity" mean?
As a noun, "autoimmunity" means: The condition where one's immune system attacks one's own tissues, i.e., an autoimmune disorder.
How do you pronounce "autoimmunity"?
The IPA (International Phonetic Alphabet) transcription for "autoimmunity" is /ˌɔː.təʊ.ɪˈmjuː.nɪ.ti/. 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 "autoimmunity"?
From auto- + immunity. 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 “autoimmunity”

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

  • The one correct English spelling is A-U-T-O-I-M-M-U-N-I-T-Y - every other letter order is a misspelling in standard orthography.
  • Say it as /ˌɔː.təʊ.ɪˈmjuː.nɪ.ti/ (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
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