sluff

/slʌf/

//slʌf// noun

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

"sluff" is a 5-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
5
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Alternative spelling of slough (skin shed by a snake or other reptile).

Key facts for sluff
PropertyValue
Headwordsluff
LanguageEnglish
Part of speechNoun
IPA/slʌf/
Letters5
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “sluff” sits in English frequency

sluff falls 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

sluff is uncommon English outside the top frequency list, classed as anoun, transcribed /slʌf/. Rarity is why readers land here mid-draft. 3 senses are on record.

sluff doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Middle English slough (“skin, husk, rind; cocoon; scales; cyst”), akin to Middle High German slûch (“slough”) (whence German Schlauch (“tube, hose”)). The correct English form is sluff, spelled S-L-U-F-F.

Definition

  1. 1
    Alternative spelling of slough (skin shed by a snake or other reptile).
  2. 2
    Alternative spelling of slough (dead skin on a sore or ulcer).
  3. 3
    An avalanche, mudslide, or a like slumping of material or debris.

Etymology

From Middle English slough (“skin, husk, rind; cocoon; scales; cyst”), akin to Middle High German slûch (“slough”) (whence German Schlauch (“tube, hose”)).

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 "sluff"?
"sluff" is spelled S-L-U-F-F. The IPA pronunciation is /slʌf/.
What does "sluff" mean?
As a noun, "sluff" means: Alternative spelling of slough (skin shed by a snake or other reptile).
How do you pronounce "sluff"?
The IPA (International Phonetic Alphabet) transcription for "sluff" is /slʌf/. 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 "sluff"?
From Middle English slough (“skin, husk, rind; cocoon; scales; cyst”), akin to Middle High German slûch (“slough”) (whence German Schlauch (“tube, hose”)). 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.

Using “sluff”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is S-L-U-F-F - every other letter order is a misspelling in standard orthography.
  • Say it as /slʌf/ (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
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