ennui

/ɒnˈwiː/

//ɒnˈwiː// noun

"ennui" is a 5-letter English headword indexed on PlainSpell.

The verdict

“ennui” is uncommon English (frequency #58,667 among 2,246 “E” headwords), classed as a noun. The kind of spelling people second-guess.

#58,667
frequency rank, English
2,246
“E” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A gripping listlessness or melancholia caused by boredom; depression.

Corpus desk

Index EN-ennui · ennui · English

ennui · rank #58,667 · 0 variants · 0 confusables

  • FREQ-RARE #58,667
  • LEN-MID 5 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH enliven

Nearest frequency peer: enliven (-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.

Long-tail ranks near “ennui”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “ennui” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for ennui
PropertyValue
Headwordennui
LanguageEnglish
Part of speechNoun
IPA/ɒnˈwiː/
Letters5
Frequency rank#58,667
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “ennui” in English

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).ennuifalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “enliven” (#58,666), “Eredivisie” (#58,669), “ellipses” (#58,663). Among 2,246 “E” headwords, “ennui” is #58,667. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

ennui is uncommon English at frequency #58,667 among 2,246 “E” headwords, classed as anoun, transcribed /ɒnˈwiː/. Rarity is why readers land here mid-draft. Gloss: "A gripping listlessness or melancholia caused by boredom; depression.".

ennui has no tracked misspelling variants, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: Unadapted borrowing from French ennui, from Old French enui (“annoyance”), from enuier (modern French ennuyer), from Late Latin inodiō, from Latin in odiō (“hated”). Doublet of annoy. The correct English form is ennui, spelled E-N-N-U-I.

Definition

  1. 1
    A gripping listlessness or melancholia caused by boredom; depression.

Recorded use

Wiktionary example

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

  1. There have always been individuals who toy with the political extremes out of a sort of high-class ennui.

Etymology

Unadapted borrowing from French ennui, from Old French enui (“annoyance”), from enuier (modern French ennuyer), from Late Latin inodiō, from Latin in odiō (“hated”). Doublet of annoy.

Synonyms

This word in other languages

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 "ennui"?
"ennui" is spelled E-N-N-U-I. The IPA pronunciation is /ɒnˈwiː/.
What does "ennui" mean?
As a noun, "ennui" means: A gripping listlessness or melancholia caused by boredom; depression.
How do you pronounce "ennui"?
The IPA (International Phonetic Alphabet) transcription for "ennui" is /ɒnˈwiː/. 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 "ennui"?
Unadapted borrowing from French ennui, from Old French enui (“annoyance”), from enuier (modern French ennuyer), from Late Latin inodiō, from Latin in odiō (“hated”). Doublet of annoy. 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 "ennui", not the corpus desk frequency band.

Same letter count

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

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

Source: FrequencyWords open word-frequency list