buoy

/ˈbɔɪ/

//ˈbɔɪ// noun

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

The verdict

“buoy” has 5 generated spelling variants in the English index at frequency #28,856. The variants make it a useful spelling check.

#28,856
frequency rank, English
4,121
“B” headwords
5
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A float moored in water to mark a location, warn of danger, indicate a navigational channel or for other purposes

Corpus desk

Index EN-buoy · buoy · English

buoy · rank #28,856 · 5 variants · 20 confusables

  • FREQ-MID #28,856
  • LEN-MID 4 letters
  • VOW-3 3 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-MID 5 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH bugger

Nearest frequency peer: bugger (-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.

Rank peers near misspelling magnet “buoy”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “buoy” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

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

buoy vs by
50% similar
buoy vs but
50% similar
buoy vs buy
75% similar

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

Key facts for buoy
PropertyValue
Headwordbuoy
LanguageEnglish
Part of speechNoun
IPA/ˈbɔɪ/
Letters4
Frequency rank#28,856
Misspellings tracked5
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “buoy”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).buoylands here:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “bugger” (#28,855), “campaigner” (#28,858), “breasted” (#28,852). Among 4,121 “B” headwords, “buoy” is #28,856. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 5 spelling variants around buoy (IPA /ˈbɔɪ/), anoun. Corpus frequency is #28,856 among 4,121 “B” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 5 likely wrong-spelling variants for buoy, with forms such as "bbuoy", "bouy", and "buoyy". 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, "by", "but", "buy", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English boy, boye, from Middle Dutch boeye (“float, buoy”), from Old French boue (“piece of wood or cork that floats above an anchor to indicate where it is anchored”) (modern French bouée), ultimately from Frankish *baukn (“beacon”). Doublet of… The correct English form is buoy, spelled B-U-O-Y.

Definition

  1. 1
    A float moored in water to mark a location, warn of danger, indicate a navigational channel or for other purposes
  2. 2
    A float moored in water to mark a location, warn of danger, indicate a navigational channel or for other purposes
  3. 3
    A sign where the non-dominant hand is held in a stationary configuration as a landmark for meaning associations with the dominant hand.

Recorded use

Wiktionary examples

These source excerpts show how buoy appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. While comm buoys allow rapid transmission, there is a finite amount of bandwidth available. Given that trillions of people may be trying to pass a message through a given buoy at any one time, access to the network is parceled out on priority tiers.
  2. Texas began deploying chains of specially designed buoys down the middle of the Rio Grande near Eagle Pass to deter migrants from crossing illegally in June 2023, sparking protests from migrant activists and from the Mexican government.

Etymology

From Middle English boy, boye, from Middle Dutch boeye (“float, buoy”), from Old French boue (“piece of wood or cork that floats above an anchor to indicate where it is anchored”) (modern French bouée), ultimately from Frankish *baukn (“beacon”). Doublet of beacon. Same root as English bon in bonfire. Alternatively, and perhaps less likely (due to the unexplained shift in meaning), from Middle Dutch boeye (“shackle, fetter”), from Old French buie (“fetter, chain”), from Latin boia (“a (leather) collar, band, fetter”), from Ancient Greek βόεος (bóeos), βόειος (bóeios, “of ox-hide”), from βοῦς (boûs, “ox”), from Proto-Indo-European *gʷṓws (“cow”). Noun sense 2 was coined by American linguist Scott K. Lindell in 2003.

This word in other languages

Common misspellings

Also misspelled as:

  • bbuoy
  • bouy
  • buoyy
  • buyo
  • uboy

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of buoy - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

bbuoy1bouy2buoyy1buyo2uboy2
Edit distance from "buoy"

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 "buoy"?
"buoy" is spelled B-U-O-Y. The IPA pronunciation is /ˈbɔɪ/.
What does "buoy" mean?
As a noun, "buoy" means: A float moored in water to mark a location, warn of danger, indicate a navigational channel or for other purposes
What words are commonly confused with "buoy"?
"buoy" is commonly confused with "by", "but", "buy". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "buoy"?
The IPA (International Phonetic Alphabet) transcription for "buoy" is /ˈbɔɪ/. 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 "buoy"?
From Middle English boy, boye, from Middle Dutch boeye (“float, buoy”), from Old French boue (“piece of wood or cork that floats above an anchor to indicate where it is anchored”) (modern French bouée), ultimately from Frankish *baukn (“beacon”). ... 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 "buoy", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 4 letters (nearest by frequency rank).

Similar misspelling depth

Headwords with a similar count of attested misspellings (5 here; floor ≥5).

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

Source: FrequencyWords open word-frequency list