épaissir
\e.pɛ.siʁ\
The verdict
“épaissir” is uncommon French (frequency #57,711 among 1,805 “É” headwords), classed as a verb. The kind of spelling people second-guess.
- #57,711
- frequency rank, French
- 1,805
- “É” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Rendre épais, plus épais.
Corpus desk
Index FR-epaissir · épaissir · French
épaissir · rank #57,711 · 0 variants · 0 confusables
- FREQ-RARE #57,711
- LEN-LONG 8 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,805
- PHOTO-FINISH Énée
Nearest frequency peer: Énée (-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 « épaissir »
Bande clairsemée: les barres inversent le rang pour que le rare se lise plus court
- élégie
élégie
42,293 corpus weight
- émotivité
émotivité
42,292 corpus weight
- Énée
Énée
42,291 corpus weight
- épaissir
épaissir
42,290 corpus weight
- épicéa
épicéa
42,289 corpus weight
- épinette
épinette
42,288 corpus weight
What this shows Vue de longue queue: où « épaissir » se situe face à des rangs français aussi rares.
| Property | Value |
|---|---|
| Headword | épaissir |
| Language | French |
| Part of speech | Verb |
| IPA | \e.pɛ.siʁ\ |
| Letters | 8 |
| Frequency rank | #57,711 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Longue queue: rang de « épaissir » en français
Rare enough to double-check
épaissir is uncommon French at frequency #57,711 among 1,805 “É” headwords, classed as averb, transcribed \e.pɛ.siʁ\. Rarity is why readers land here mid-draft. 3 senses are on record.
We couldn't generate a plausible misspelling set for épaissir, suggesting the orthography follows predictable French patterns. No close-neighbour confusable shows up for this headword in our dataset, since no other headword is close enough in sound or shape to pair with it.
This entry carries no recorded etymology, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct French form is épaissir, spelled É-P-A-I-S-S-I-R.
Definition
- 1Rendre épais, plus épais.
- 2Devenir épais, plus épais.
- 3Devenir épais, plus épais.
Recorded use
Wiktionary examplesThese source excerpts show how épaissir appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Mettez du sucre dans ce sirop pour l’épaissir.
Les fumées de ces usines épaississent l’air.
Antonyms
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 French corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar French words by spelling shape
Same letter count and similar misspelling depth for "épaissir", not the corpus desk frequency band.
Same letter count
Frequency-ranked French headwords with 8 letters (nearest by frequency rank).