apteryx

noun

"apteryx" is a 7-letter English headword indexed on PlainSpell.

The verdict

“apteryx” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
7
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Kiwi bird.

Corpus desk

Index EN-apteryx · apteryx · English

apteryx · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "A" thin
  • PHOTO-UNK Peer pending

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.

Key facts for apteryx
PropertyValue
Headwordapteryx
LanguageEnglish
Part of speechNoun
Letters7
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “apteryx” in English

apteryxfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

apteryx is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Kiwi bird.".

apteryx doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. Our dataset records no confusable match here, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From the New Latin genus name, Apteryx. The correct English form is apteryx, spelled A-P-T-E-R-Y-X.

Definition

  1. 1
    Kiwi bird.

Etymology

From the New Latin genus name, Apteryx.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "apteryx"?
"apteryx" is spelled A-P-T-E-R-Y-X.
What does "apteryx" mean?
As a noun, "apteryx" means: Kiwi bird.
What is the origin of the word "apteryx"?
From the New Latin genus name, Apteryx. 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.

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

Source: FrequencyWords open word-frequency list