ies vs io, What's the Difference?

Which to use

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

#25,358
“ies” frequency rank: #23,588
“io” frequency rank: 48946
confusion score

Side-by-Side Comparison

Feature	ies	io
Definition	Pluriel de ie.	Septième lettre de l’alphabet cyrillique, ё.

Where the eye mixes ies and io

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

3 ch

ies

2 ch

Look-alike desk: ies vs io

A purely visual mix-up. ies (\je\) 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 1 letter(s) in length. Our composite confusion score for this pair is 48946, derived from the frequency rank of both members and their visual similarity.

ies is recorded at frequency rank #25,358, classified as anoun, pronounced \je\. 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 48946, this pair ranks #174,778 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ies vs io

Shared letters: i. Private to "ies": es. Private to "io": o.

"ies" · 3 letters · shape VVC · "io" · 2 letters · shape VV

Frequently Asked Questions

Can "ies" and "io" be used interchangeably?

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, "ies" or "io"?

"io" is the more common of the two: it sits at frequency rank #23,588 in our French list, against #25,358 for "ies". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

Full dictionary entry for "ies" 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 #174,778 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"ies" and "io" also get mixed up with nearby pairs, the highest-scored neighbour is "ies vs isi". Nearby pair

Confusion rank #174,778 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.