infectieusevsinfectieuxWhich spelling fits?

Which to use

“infectieuse” and “infectieux” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#34,576
“infectieuse” frequency rank
#30,656
“infectieux” frequency rank
65232
confusion score

Side-by-Side Comparison

Feature infectieuse infectieux
Definition Féminin singulier de infectieux. Qui produit une infection.

Where the eye mixes infectieuse and infectieux

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. infectieuse runs 11 letters (VCCVCCVVVCV) against infectieux's 10 (VCCVCCVVVC) - the length gap alone is often enough to separate them once you know to check it.

11 ch
infectieuse
10 ch
infectieux

Why the eye confuses infectieuse with infectieux

A purely visual mix-up. infectieuse (\ɛ̃.fɛk.sjøz\) and infectieux (\ɛ̃.fɛk.sjø\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 65232, derived from the frequency rank of both members and their visual similarity.

infectieuse is recorded at frequency rank #34,576, classified as anadj, pronounced \ɛ̃.fɛk.sjøz\. infectieux is at rank #30,656, tagged as anadj, pronounced \ɛ̃.fɛk.sjø\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 65232, this pair ranks #73,250 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of infectieuse vs infectieux

Shared letters: cefintu. Private to "infectieuse": s. Private to "infectieux": x.

"infectieuse" · 11 letters · shape VCCVCCVVVCV  ·  "infectieux" · 10 letters · shape VCCVCCVVVC

Known mistypes of this pair

  • infectieuse ← ifnectieuse · inefctieuse · infcetieuse · infecctieuse · infeciteuse · infecteiuse · infectiesue · infectieues
  • infectieux ← ifnectieux · inefctieux · infcetieux · infecctieux · infeciteux · infecteiux · infectieuxx · infectiexu

Frequently Asked Questions

Do "infectieuse" and "infectieux" mean the same thing in a sentence?
No. They are said differently (\ɛ̃.fɛk.sjøz\ versus \ɛ̃.fɛk.sjø\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "infectieuse" or "infectieux"?
"infectieux" is the more common of the two: it sits at frequency rank #30,656 in our French list, against #34,576 for "infectieuse". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "infectieuse" and "infectieux" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "infectieuse" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "infectieux" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #73,250 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "infectieuse" and "infectieux" also get mixed up with nearby pairs, the highest-scored neighbour is "infectieuse vs infectieuses". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #73,250 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list