-illion
\i.ljɔ̃\
The verdict
“-illion” is uncommon French (outside the top frequency list), classed as a suffix. The kind of spelling people second-guess.
- Unranked
- below top-frequency French
- 7
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Suffixe signifiant, avec un préfixe latin, la puissance de millions.
| Property | Value |
|---|---|
| Headword | -illion |
| Language | French |
| Part of speech | Suffix |
| IPA | \i.ljɔ̃\ |
| Letters | 7 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “-illion” sits in French frequency
Rare enough to double-check
-illion is uncommon French outside the top frequency list, classed as asuffix, transcribed \i.ljɔ̃\. Rarity is why readers land here mid-draft. Gloss: "Suffixe signifiant, avec un préfixe latin, la puissance de millions.".
Zero misspellings are on record for -illion in our index, since its letter sequence doesn't invite the usual edit-distance slips. Our confusable-pair dataset has no match for it, which tends to mean the word is visually distinctive enough to stand on its own.
No explicit etymology string is stored for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct French form is -illion, spelled --I-L-L-I-O-N.
Definition
- 1Suffixe signifiant, avec un préfixe latin, la puissance de millions.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "-illion"?
What does "-illion" mean?
How do you pronounce "-illion"?
What language does "-illion" come from?
Is PlainSpell free to use?
Using “-illion”
The practical upshot for anyone who landed here from a spell-check.
- The one correct French spelling is --I-L-L-I-O-N - every other letter order is a misspelling in standard orthography.
- Say it as \i.ljɔ̃\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more French words and confusable pairs in the same reference. French words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.