ievsiosConfusable pair

Which to use

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

#7,068
“ie” frequency rank
#8,870
“ios” frequency rank
15938
confusion score

Side-by-Side Comparison

Feature ie ios
Definition Neuvième lettre de l’alphabet cyrillique, е. Pluriel de io.

Where the eye mixes ie and ios

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch
ie
3 ch
ios

Look-alike desk: ie vs ios

A purely visual mix-up. ie (\je\) and ios (\jo\) 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 15938, derived from the frequency rank of both members and their visual similarity.

ie is recorded at frequency rank #7,068, classified as anoun, pronounced \je\. ios is at rank #8,870, tagged as anoun, pronounced \jo\.

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 15938, this pair ranks #390,159 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ie vs ios

Shared letters: i. Private to "ie": e. Private to "ios": os.

"ie" · 2 letters · shape VV  ·  "ios" · 3 letters · shape VVC

Frequently Asked Questions

Is swapping "ie" for "ios" ever safe?
No. They are said differently (\je\ versus \jo\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "ie" or "ios"?
"ie" is the more common of the two: it sits at frequency rank #7,068 in our French list, against #8,870 for "ios". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "ie" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ios" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #390,159 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ie" and "ios" also get mixed up with nearby pairs, the highest-scored neighbour is "ios vs isi". Nearby pair

Confusion rank #390,159 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