iavsiosWhat's the difference?

Which to use

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

#6,099
“ia” frequency rank
#8,870
“ios” frequency rank
14969
confusion score

Side-by-Side Comparison

Feature ia ios
Definition Trente-deuxième lettre de l’alphabet cyrillique, я. Pluriel de io.

Where the eye mixes ia and ios

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

2 ch
ia
3 ch
ios

Visual trap between ia and ios

A purely visual mix-up. ia (\ja\) 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 14969, derived from the frequency rank of both members and their visual similarity.

ia is recorded at frequency rank #6,099, classified as anoun, pronounced \ja\. 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 14969, this pair ranks #394,423 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ia vs ios

Shared letters: i. Private to "ia": a. Private to "ios": os.

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

Frequently Asked Questions

Is swapping "ia" for "ios" ever safe?
No. They are said differently (\ja\ versus \jo\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "ia" vs "ios" - which ranks higher?
"ia" is the more common of the two: it sits at frequency rank #6,099 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.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "ia" 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 #394,423 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ia" and "ios" also get mixed up with nearby pairs, the highest-scored neighbour is "ios vs isi". Nearby pair

Confusion rank #394,423 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