Which to use
“IFA” and “iso” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #43,981
- “IFA” frequency rank
- #12,181
- “iso” frequency rank
- 56162
- confusion score
Side-by-Side Comparison
| Feature | IFA | iso |
|---|---|---|
| Definition | API, alphabet phonétique international. | Plan isométrique. |
Where the eye mixes IFA and iso
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses IFA with iso
A purely visual mix-up. IFA (\i.fo.a\) and iso (\i.zo\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 56162, derived from the frequency rank of both members and their visual similarity.
IFA is recorded at frequency rank #43,981, classified as anoun, pronounced \i.fo.a\. iso is at rank #12,181, tagged as anoun, pronounced \i.zo\.
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 56162, this pair ranks #122,841 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of IFA vs iso
Shared letters: i. Private to "IFA": af. Private to "iso": os.
"IFA" · 3 letters · shape VCV · "iso" · 3 letters · shape VCV
Frequently Asked Questions
Is swapping "IFA" for "iso" ever safe?
In ordinary French text, does "IFA" or "iso" show up more?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "IFA" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "iso" - compare definitions side by side with the headword page. Word entry
- This pair ranks #122,841 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "IFA" and "iso" also get mixed up with nearby pairs, the highest-scored neighbour is "IFA vs isi". Nearby pair
Confusion rank #122,841 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.