Boolean

/ˈbuːl.i.ən/

//ˈbuːl.i.ən// adj

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

"boolean" is a 7-letter English headword indexed on PlainSpell.

The verdict

“Boolean” has 9 generated spelling variants in the English index at frequency #30,706. The variants make it a useful spelling check.

#30,706
frequency rank, English
4,121
“B” headwords
9
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Of or pertaining to the work of George Boole.

Corpus desk

Index EN-boolean · Boolean · English

Boolean · rank #30,706 · 9 variants · 1 confusable

  • FREQ-MID #30,706
  • LEN-LONG 7 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 1 pairs
  • VAR-MID 9 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH Bourke

Nearest frequency peer: Bourke (+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 “Boolean”

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

corpus weight

What this shows “Boolean” 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).

Boolean vs Boleyn
71% similar

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

Key facts for Boolean
PropertyValue
HeadwordBoolean
LanguageEnglish
Part of speechAdjective
IPA/ˈbuːl.i.ən/
Letters7
Frequency rank#30,706
Misspellings tracked9
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “Boolean”

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).Booleanlands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “Bourke” (#30,707), “bolder” (#30,704), “boyer” (#30,708). Among 4,121 “B” headwords, “Boolean” is #30,706. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 9 spelling variants around Boolean (IPA /ˈbuːl.i.ən/), anadjective. Corpus frequency is #30,706 among 4,121 “B” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 9 likely wrong-spelling variants for Boolean, with forms such as "bboolean", "bolean", and "boloean". 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 1 confusable-pair relationship, "Boleyn", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From Boole + -ean, named after English mathematician, philosopher and logician George Boole (1815–1864). The correct English form is Boolean, spelled B-O-O-L-E-A-N.

Definition

  1. 1
    Of or pertaining to the work of George Boole.
  2. 2
    Pertaining to data items that can have “true” and “false” (or, equivalently, 1 and 0 respectively) as their only possible values and to operations on such values.

Recorded use

Wiktionary examples

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

  1. Oh, Boolean operators! "Blue and ones"! Good idea!
  2. The associativity of OR and AND is not at all obvious. It is tempting to assume that because OR and AND are commutative that they must be associative also. This is not the case, however, and some commutative Boolean operators are not associative. Examples include NAND and NOR.

Etymology

From Boole + -ean, named after English mathematician, philosopher and logician George Boole (1815–1864).

This word in other languages

booléen(Français)

Common misspellings

Also misspelled as:

  • bboolean
  • bolean
  • boloean
  • booelan
  • boolaen
  • booleann
  • boolena
  • boollean
  • obolean

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of Boolean - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

bboolean1bolean1boloean2booelan2boolaen2booleann1boolena2boollean1
Edit distance from "Boolean"

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 "Boolean"?
"Boolean" is spelled B-O-O-L-E-A-N. The IPA pronunciation is /ˈbuːl.i.ən/.
What does "Boolean" mean?
As an adjective, "Boolean" means: Of or pertaining to the work of George Boole.
What words are commonly confused with "Boolean"?
"Boolean" is commonly confused with "Boleyn". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "Boolean"?
The IPA (International Phonetic Alphabet) transcription for "Boolean" is /ˈbuːl.i.ən/. 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 "Boolean"?
From Boole + -ean, named after English mathematician, philosopher and logician George Boole (1815–1864). 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 "Boolean", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

blaring#30,703Cassius#30,725cayenne#30,727anthems#30,684

Similar misspelling depth

Headwords with a similar count of attested misspellings (9 here; floor ≥5).

bolder9 variantscleary9 variantscruelly9 variantsDaleks9 variants

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

Source: FrequencyWords open word-frequency list