boo

\ˈbu\

/\ˈbu\/ intj

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

The verdict

“boo” sits in 20 confusable pairs (corpus #25,911) as an interjection. The look-alike neighbours are the real trap.

#25,911
frequency rank, French
4,251
“B” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Bouh.

Corpus desk

Index FR-boo · boo · French

boo · rank #25,911 · 0 variants · 20 confusables

  • FREQ-MID #25,911
  • LEN-MID 3 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 4,251
  • PHOTO-FINISH Bondy

Nearest frequency peer: Bondy (-1 rank slots)

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.

Voisins de fréquence du confusable « boo »

Pairs de poids proche dans le corpus, séparés des confusables ci-dessous

corpus weight

What this shows Les barres placent « boo » face aux lemmes français les plus proches par rang, pas un reprint du bureau des confusables.

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).

boo vs by
33% similar
boo vs bu
33% similar
boo vs Br
0% similar

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

Key facts for boo
PropertyValue
Headwordboo
LanguageFrench
Part of speechInterjection
IPA\ˈbu\
Letters3
Frequency rank#25,911
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Rang de corpus près des confusables de « boo »

Cette échelle va du noyau du français courant (gauche) jusqu'à la traîne des formes rares (droite).boose place ici:

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

L'échelle est logarithmique (chaque tic ≈ 10× plus rare). Dans la même bande de rareté figurent « Bondy » (#25,910), « borgne » (#25,912), « bombardiers » (#25,909). Parmi 4,251 lemmes en « B », « boo » est au #25,911. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for boo is neighbouring look-alikes ("by", "bu", …), not just typos; it is aninterjection pronounced \ˈbu\. Frequency #25,911 among 4,251 “B” headwords. Gloss: "Bouh.".

No generated misspelling entries exist for boo in our index, a sign its spelling follows regular French conventions. It also participates in 20 confusable-pair relationships, "by", "bu", "Br", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

This entry's etymology isn't recorded, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct French form is boo, spelled B-O-O.

Definition

  1. 1
    Bouh.

Recorded use

Wiktionary example

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

  1. She jumped out and shouted “Boo!” to scare her friend.

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 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "boo"?
"boo" is spelled B-O-O. The IPA pronunciation is \ˈbu\.
What does "boo" mean?
As an interjection, "boo" means: Bouh.
What words are commonly confused with "boo"?
"boo" is commonly confused with "by", "bu", "Br". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "boo"?
The IPA (International Phonetic Alphabet) transcription for "boo" is \ˈbu\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "boo" come from?
"boo" is a French word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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 French words by spelling shape

Same letter count and similar misspelling depth for "boo", not the corpus desk frequency band.

Same letter count

Frequency-ranked French headwords with 3 letters (nearest by frequency rank).

auf#25,894ale#25,879vox#25,853til#25,835

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

Source: FrequencyWords open word-frequency list