ilvsioWhat's the difference?

Quick tell: il is a pronoun, io is a noun, so they fill different roles in a sentence.

Which to use

“il” is a pronoun and “io” is a noun - they look or sound alike but fill different roles in a sentence.

#18
“il” frequency rank
#23,588
“io” frequency rank
23606
confusion score

Side-by-Side Comparison

Feature il io
Definition Pronom de la troisième personne du singulier masculin (utilisé exclusivement en tant que sujet). Désigne une personne, un animal ou une chose dont le genre est masculin. Septième lettre de l’alphabet cyrillique, ё.

Where the eye mixes il and io

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

2 ch
il
2 ch
io

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: il is \il\ while io is \jo\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - l in “il” becomes o in “io”, and the parts of speech differ too (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 23606, derived from the frequency rank of both members and their visual similarity.

il is recorded at frequency rank #18, classified as apron, pronounced \il\. 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 23606, this pair ranks #351,477 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of il vs io

Shared letters: i. Private to "il": l. Private to "io": o.

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

Frequently Asked Questions

Can "il" and "io" be used interchangeably?
No - they are not even the same part of speech. "il" is a pronoun and "io" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "il" or "io"?
"il" is the more common of the two: it sits at frequency rank #18 in our French list, against #23,588 for "io". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "il" and "io". Here's where to go from here.

  • Full dictionary entry for "il" 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 #351,477 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "il" and "io" also get mixed up with nearby pairs, the highest-scored neighbour is "io vs isi". Nearby pair

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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

Source: FrequencyWords open word-frequency list