ruff

/ɹʌf/

//ɹʌf// noun

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

"ruff" is a 4-letter English headword indexed on PlainSpell.

The verdict

“ruff” is a moderately-common English word, ranked #27,272 in English word frequency and used as a noun.

#27,272
frequency rank, English
4
letters
4
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A circular frill or ruffle on a garment, especially a starched, fluted frill at the neck in Elizabethan and Jacobean England (1560s–1620s).

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

ruff vs run
50% similar
ruff vs rug
50% similar
ruff vs rum
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for ruff
PropertyValue
Headwordruff
LanguageEnglish
Part of speechNoun
IPA/ɹʌf/
Letters4
Frequency rank#27,272
Misspellings tracked4
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “ruff” 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). ruff lands here:

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

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

Spelling & Dictionary Insight

The English entry for ruff is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ɹʌf/. Corpus data places it at rank #27,272 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 8 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 4 likely wrong-spelling variants for ruff, with forms such as "rfuf", "rruff", and "ruf". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 20 confusable-pair relationships, "run", "rug", "rum", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: Clipping of ruffle, or possibly from rough. The correct English form is ruff, spelled R-U-F-F.

Definition

  1. 1
    A circular frill or ruffle on a garment, especially a starched, fluted frill at the neck in Elizabethan and Jacobean England (1560s–1620s).
  2. 2
    Anything formed with plaits or flutings like a frill.
  3. 3
    Senses relating to animals.
  4. 4
    Senses relating to animals.
  5. 5
    Senses relating to animals.
  6. 6
    A collar on a shaft or other piece to prevent endwise motion.
  7. 7
    An exhibition of haughtiness or pride.
  8. 8
    Tumultuous or wanton conduct or procedure.

Etymology

Clipping of ruffle, or possibly from rough.

This word in other languages

combatiente(Español)fraise(Français)Halskrause(Deutsch)rufo(Português)

Common misspellings

Also misspelled as: rfuf,rruff,ruf,urff

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of ruff - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

rfuf2rruff1ruf1urff2
Edit distance from "ruff"

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 "ruff"?
"ruff" is spelled R-U-F-F. The IPA pronunciation is /ɹʌf/.
What does "ruff" mean?
As a noun, "ruff" means: A circular frill or ruffle on a garment, especially a starched, fluted frill at the neck in Elizabethan and Jacobean England (1560s–1620s).
What words are commonly confused with "ruff"?
"ruff" is commonly confused with "run", "rug", "rum". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "ruff"?
The IPA (International Phonetic Alphabet) transcription for "ruff" is /ɹʌf/. 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 "ruff"?
Clipping of ruffle, or possibly from rough. 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 “ruff”

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

  • The one correct English spelling is R-U-F-F - every other letter order is a misspelling in standard orthography.
  • Say it as /ɹʌf/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “run” - see the side-by-side comparison. ruff vs run
  • 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 FrequencyWords open word-frequency list