idvsioTell them apart

Which to use

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

#6,834
“id” frequency rank
#23,588
“io” frequency rank
30422
confusion score

Side-by-Side Comparison

Feature id io
Definition Ça. Septième lettre de l’alphabet cyrillique, ё.

Where the eye mixes id and io

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

2 ch
id
2 ch
io

Visual trap between id and io

A purely visual mix-up. id (\ˈɪd\) and io (\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 a single letter - d in “id” becomes o in “io”. Our composite confusion score for this pair is 30422, derived from the frequency rank of both members and their visual similarity.

id is recorded at frequency rank #6,834, classified as anoun, pronounced \ˈɪd\. io is at rank #23,588, 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 30422, this pair ranks #310,431 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of id vs io

Shared letters: i. Private to "id": d. Private to "io": o.

"id" · 2 letters · shape VC  ·  "io" · 2 letters · shape VV

Frequently Asked Questions

Is swapping "id" for "io" ever safe?
No. They are said differently (\ˈɪd\ versus \jo\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "id" vs "io" - which ranks higher?
"id" is the more common of the two: it sits at frequency rank #6,834 in our French list, against #23,588 for "io". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "id" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "io" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #310,431 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "id" and "io" also get mixed up with nearby pairs, the highest-scored neighbour is "io vs isi". Nearby pair

Confusion rank #310,431 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