hallu

^((h muet))\a.ly\

/^((h muet))\a.ly\/ noun

The verdict

“hallu” is uncommon French (frequency #92,813 among 1,969 “H” headwords), classed as a noun. The kind of spelling people second-guess.

#92,813
frequency rank, French
1,969
“H” headwords

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

Corpus desk

Index FR-hallu · hallu · French

hallu · rank #92,813 · 0 variants · 0 confusables

  • FREQ-RARE #92,813
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 1,969
  • PHOTO-FINISH hagards

Nearest frequency peer: hagards (-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.

Rangs de longue queue près de « hallu »

Bande clairsemée: les barres inversent le rang pour que le rare se lise plus court

corpus weight

What this shows Vue de longue queue: où « hallu » se situe face à des rangs français aussi rares.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for hallu
PropertyValue
Headwordhallu
LanguageFrench
Part of speechNoun
IPA^((h muet))\a.ly\
Letters5
Frequency rank#92,813
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « hallu » en français

De gauche à droite: le peu qui porte la parole quotidienne, puis la longue queue quasi invisible.hallutombe dans cette queue de rareté:

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

Les tics avancent en logarithme; chacun est de l'ordre de dix fois plus rare. Voisins rares de la même bande: « hagards » (#92,812), « géothermiques » (#92,811), « hanneton » (#92,815). Parmi 1,969 lemmes en « H », « hallu » est au #92,813. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

hallu is uncommon French at frequency #92,813 among 1,969 “H” headwords, classed as anoun, transcribed ^((h muet))\a.ly\. Rarity is why readers land here mid-draft. Gloss: "Hallucination.".

hallu doesn't appear in our generated misspelling index, typically a sign the spelling maps closely to how the word sounds. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.

No explicit etymology string is stored for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct French form is hallu, spelled H-A-L-L-U.

Definition

  1. 1
    Hallucination.

Recorded use

Wiktionary example

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

  1. Moi je leur dis je sais pas – là tout de suite je suis en train de remonter – c'est un peu des bulles partout – et puis je le sais moi que c'est une hallu au LSD que je suis en train de faire – qu'on peut pas respirer sous l'eau.

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 "hallu"?
"hallu" is spelled H-A-L-L-U. The IPA pronunciation is ^((h muet))\a.ly\.
What does "hallu" mean?
As a noun, "hallu" means: Hallucination.
How do you pronounce "hallu"?
The IPA (International Phonetic Alphabet) transcription for "hallu" is ^((h muet))\a.ly\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "hallu" come from?
"hallu" is a French word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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 "hallu", not the corpus desk frequency band.

Same letter count

Frequency-ranked French headwords with 5 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list