rainworm

noun

"rainworm" is a 8-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
8
letters

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

Corpus desk

Index EN-rainworm · rainworm · English

rainworm · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "R" 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 rainworm
PropertyValue
Headwordrainworm
LanguageEnglish
Part of speechNoun
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “rainworm” in English

rainwormranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

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

Rare enough to double-check

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

Zero misspellings are on record for rainworm in our index, since its letter pattern doesn't lend itself to common typo substitutions. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Middle English [Term?], from Old English reġnwyrm, from Proto-Germanic [Term?]. Analysable as rain + worm, because the worm has the habit of surfacing on top of the saturated soil after rainfall. Cognate with Dutch regenworm, Old High German reganwurm,… The correct English form is rainworm, spelled R-A-I-N-W-O-R-M.

Definition

  1. 1
    An earthworm.

Etymology

From Middle English [Term?], from Old English reġnwyrm, from Proto-Germanic [Term?]. Analysable as rain + worm, because the worm has the habit of surfacing on top of the saturated soil after rainfall. Cognate with Dutch regenworm, Old High German reganwurm, whence German Regenwurm.

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 "rainworm"?
"rainworm" is spelled R-A-I-N-W-O-R-M.
What does "rainworm" mean?
As a noun, "rainworm" means: An earthworm.
What is the origin of the word "rainworm"?
From Middle English [Term?], from Old English reġnwyrm, from Proto-Germanic [Term?]. Analysable as rain + worm, because the worm has the habit of surfacing on top of the saturated soil after rainfall. Cognate with Dutch regenworm, Old High German ... 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