insidieux
\ɛ̃.si.djø\
The verdict
“insidieux” has 12 generated spelling variants in the French index at frequency #45,674. The variants make it a useful spelling check.
- #45,674
- frequency rank, French
- 142,603
- “I” headwords
- 12
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Qui tend des embûches, un piège à quelqu’un.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | insidieux |
| Language | French |
| Part of speech | Adjective |
| IPA | \ɛ̃.si.djø\ |
| Letters | 9 |
| Frequency rank | #45,674 |
| Misspellings tracked | 12 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Where “insidieux” sits in French frequency
A misspelling magnet
The generator records 12 spelling variants around insidieux (IPA \ɛ̃.si.djø\), anadjective. Corpus frequency is #45,674 among 142,603 “I” headwords. Wiktionary lists 3 senses, so context still picks the gloss.
Our generated misspelling index lists 12 likely wrong-spelling variants for insidieux, with forms such as "inisdieux", "innsidieux", and "insdiieux". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 1 confusable-pair relationship, "insidieuse", a pairing that trips writers up because the two words share enough sound or shape to blur together.
No explicit etymology string is stored for this entry, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct French form is insidieux, spelled I-N-S-I-D-I-E-U-X.
Definition
- 1Qui tend des embûches, un piège à quelqu’un.
- 2Qui est plein d’embûches, qui a le caractère d’un piège.
- 3Qualifie une maladie chronique, dont le diagnostic est difficile.
Synonyms
This word in other languages
Common misspellings
Also misspelled as: inisdieux,innsidieux,insdiieux,insiddieux,insideiux,insidieuxx,insidiexu,insidiuex,insiideux,inssidieux,isnidieux,nisidieux
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of insidieux - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
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 "insidieux"?
What does "insidieux" mean?
What words are commonly confused with "insidieux"?
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Is PlainSpell free to use?
Using “insidieux”
The practical upshot for anyone who landed here from a spell-check.
- The one correct French spelling is I-N-S-I-D-I-E-U-X - every other letter order is a misspelling in standard orthography.
- Say it as \ɛ̃.si.djø\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “insidieuse” - see the side-by-side comparison. insidieux vs insidieuse
- Browse more French words and confusable pairs in the same reference. French words
Same frequency band
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.