silverfish

noun

"silverfish" is a 10-letter English headword indexed on PlainSpell.

The verdict

“silverfish” is uncommon English (frequency #87,829 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#87,829
frequency rank, English
54,294
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Certain insects

Corpus desk

Index EN-silverfish · silverfish · English

silverfish · rank #87,829 · 0 variants · 0 confusables

  • FREQ-RARE #87,829
  • LEN-MEGA 10 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 54,294
  • PHOTO-FINISH sinewy

Nearest frequency peer: sinewy (+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.

Frequency neighbourhood for “silverfish”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “silverfish” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of May 6, 2026
Key facts for silverfish
PropertyValue
Headwordsilverfish
LanguageEnglish
Part of speechNoun
Letters10
Frequency rank#87,829
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “silverfish” 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). silverfish lands here:

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

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

Rare enough to double-check

silverfish is uncommon English at frequency #87,829 among 54,294 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. 20 senses are on record.

silverfish doesn't appear in our generated misspelling index, suggesting the orthography follows predictable English patterns. 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 silver + fish: from its appearance, in the case of the insect. The correct English form is silverfish, spelled S-I-L-V-E-R-F-I-S-H.

Definition

  1. 1
    Certain insects
  2. 2
    Certain insects
  3. 3
    Certain insects
  4. 4
    Certain fish
  5. 5
    Certain fish
  6. 6
    Certain fish
  7. 7
    Certain fish
  8. 8
    Certain fish
  9. 9
    Certain fish
  10. 10
    Certain fish
  11. 11
    Certain fish
  12. 12
    Certain fish
  13. 13
    Certain fish
  14. 14
    Certain fish
  15. 15
    Certain fish
  16. 16
    Certain fish
  17. 17
    Certain fish
  18. 18
    Certain fish
  19. 19
    Certain fish
  20. 20
    Certain fish

Etymology

From silver + fish: from its appearance, in the case of the insect.

Synonyms

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.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "silverfish"?
"silverfish" is spelled S-I-L-V-E-R-F-I-S-H.
What does "silverfish" mean?
As a noun, "silverfish" means: Certain insects
What is the origin of the word "silverfish"?
From silver + fish: from its appearance, in the case of the insect. 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 "silverfish", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency 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.

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

Source: FrequencyWords open word-frequency list