anaphylaxis

/ˌænəfɪˈlæksɪs/

//ˌænəfɪˈlæksɪs// noun

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

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

The verdict

“anaphylaxis” has 17 generated spelling variants in the English index at frequency #47,462. The variants make it a useful spelling check.

#47,462
frequency rank, English
3,931
“A” headwords
17
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Extreme sensitivity to a substance such as a foreign protein or drug.

Corpus desk

Index EN-anaphylaxis · anaphylaxis · English

anaphylaxis · rank #47,462 · 17 variants · 0 confusables

  • FREQ-MID #47,462
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-HIGH 17 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH amateurish

Nearest frequency peer: amateurish (-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.

Rank peers near misspelling magnet “anaphylaxis”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for anaphylaxis
PropertyValue
Headwordanaphylaxis
LanguageEnglish
Part of speechNoun
IPA/ˌænəfɪˈlæksɪs/
Letters11
Frequency rank#47,462
Misspellings tracked17
Confusable pairs0
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “anaphylaxis”

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).anaphylaxislands 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 “amateurish” (#47,461), “Ando” (#47,463), “alway” (#47,460). Among 3,931 “A” headwords, “anaphylaxis” is #47,462. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 17 spelling variants around anaphylaxis (IPA /ˌænəfɪˈlæksɪs/), anoun. Corpus frequency is #47,462 among 3,931 “A” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 17 likely wrong-spelling variants for anaphylaxis, with forms such as "aanphylaxis", "anahpylaxis", and "anaphhylaxis". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: Borrowed from French anaphylaxie, coined by French physiologist and parapsychologist Charles Richet and French zoologist Paul Portier from the Ancient Greek ᾰ̓νᾰ- (ănă-, “(intensifier) thoroughly”) from ᾰ̓νᾰ́ (ănắ, “to, again, upon”) and φύλαξις (phúlaxis, … The correct English form is anaphylaxis, spelled A-N-A-P-H-Y-L-A-X-I-S.

Definition

  1. 1
    Extreme sensitivity to a substance such as a foreign protein or drug.
  2. 2
    A severe and rapid systemic allergic reaction to an allergen, causing a constriction of the trachea, preventing breathing; anaphylactic shock.

Recorded use

Wiktionary examples

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

  1. “Anyone who has experienced or witnessed an anaphylaxis reaction knows it can be very stressful deciding when to inject epinephrine to themselves or a child and often delay,” Dr. Jonathan Spergel, chief of the allergy program at Children’s Hospital of Philadelphia, said in a news release from ARS Pharmaceuticals.
  2. He said a bite could send someone into anaphylaxis, which is a narrowing of the airways and lowering of blood pressure, within minutes.

Etymology

Borrowed from French anaphylaxie, coined by French physiologist and parapsychologist Charles Richet and French zoologist Paul Portier from the Ancient Greek ᾰ̓νᾰ- (ănă-, “(intensifier) thoroughly”) from ᾰ̓νᾰ́ (ănắ, “to, again, upon”) and φύλαξις (phúlaxis, “protection, watching, guarding”).

This word in other languages

anafilaxia(Español)anaphylaxie(Français)

Common misspellings

Also misspelled as:

  • aanphylaxis
  • anahpylaxis
  • anaphhylaxis
  • anaphlyaxis
  • anaphyalxis
  • anaphylaixs
  • anaphylaxiss
  • anaphylaxsi
  • anaphylaxxis
  • anaphyllaxis
  • anaphylxais
  • anaphyylaxis
  • anapphylaxis
  • anapyhlaxis
  • annaphylaxis
  • anpahylaxis
  • naaphylaxis

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of anaphylaxis - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

aanphylaxis2anahpylaxis2anaphhylaxis1anaphlyaxis2anaphyalxis2anaphylaixs2anaphylaxiss1anaphylaxsi2
Edit distance from "anaphylaxis"

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 "anaphylaxis"?
"anaphylaxis" is spelled A-N-A-P-H-Y-L-A-X-I-S. The IPA pronunciation is /ˌænəfɪˈlæksɪs/.
What does "anaphylaxis" mean?
As a noun, "anaphylaxis" means: Extreme sensitivity to a substance such as a foreign protein or drug.
What are common misspellings of "anaphylaxis"?
Common misspellings include "aanphylaxis", "anahpylaxis", "anaphhylaxis", "anaphlyaxis", "anaphyalxis". The correct spelling is "anaphylaxis".
How do you pronounce "anaphylaxis"?
The IPA (International Phonetic Alphabet) transcription for "anaphylaxis" is /ˌænəfɪˈlæksɪs/. 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 "anaphylaxis"?
Borrowed from French anaphylaxie, coined by French physiologist and parapsychologist Charles Richet and French zoologist Paul Portier from the Ancient Greek ᾰ̓νᾰ- (ănă-, “(intensifier) thoroughly”) from ᾰ̓νᾰ́ (ănắ, “to, again, upon”) and φύλαξις (... 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 "anaphylaxis", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

accrediting#47,447Uttarakhand#47,398unnaturally#47,397concurrency#47,541

Similar misspelling depth

Headwords with a similar count of attested misspellings (17 here; floor ≥5).

unionization17 variantspolypeptide17 variantsphosphatase17 variantsmultichannel17 variants

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

Source: FrequencyWords open word-frequency list