arachnid
/əˈɹæknɪd/
"arachnid" is a 8-letter English headword indexed on PlainSpell.
The verdict
“arachnid” is uncommon English (frequency #65,694 among 35,202 “A” headwords), classed as a noun. The kind of spelling people second-guess.
- #65,694
- frequency rank, English
- 35,202
- “A” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of the eight-legged creatures, including spiders, mites, and scorpions, of the class Arachnida.
| Property | Value |
|---|---|
| Headword | arachnid |
| Language | English |
| Part of speech | Noun |
| IPA | /əˈɹæknɪd/ |
| Letters | 8 |
| Frequency rank | #65,694 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “arachnid” sits in English frequency
Rare enough to double-check
arachnid is uncommon English at frequency #65,694 among 35,202 “A” headwords, classed as anoun, transcribed /əˈɹæknɪd/. Rarity is why readers land here mid-draft. Gloss: "Any of the eight-legged creatures, including spiders, mites, and scorpions, of the class Arachnida.".
arachnid doesn't appear in our generated misspelling index, since its letter pattern doesn't lend itself to common typo substitutions. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From international scientific vocabulary, from French arachnide (1809, Lamarck), from New Latin, from Ancient Greek ἀράχνη (arákhnē, “spider”) with the suffix -id. By surface analysis, arachn- + -id. The correct English form is arachnid, spelled A-R-A-C-H-N-I-D.
Definition
- 1Any of the eight-legged creatures, including spiders, mites, and scorpions, of the class Arachnida.
Etymology
From international scientific vocabulary, from French arachnide (1809, Lamarck), from New Latin, from Ancient Greek ἀράχνη (arákhnē, “spider”) with the suffix -id. By surface analysis, arachn- + -id.
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 "arachnid"?
What does "arachnid" mean?
How do you pronounce "arachnid"?
What is the origin of the word "arachnid"?
Is PlainSpell free to use?
Using “arachnid”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-R-A-C-H-N-I-D - every other letter order is a misspelling in standard orthography.
- Say it as /əˈɹæknɪd/ (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.