Which to use
“infra” is an adverb and “intra” is a noun - they look or sound alike but fill different roles in a sentence.
- #18,228
- “infra” frequency rank
- #10,341
- “intra” frequency rank
- 28569
- confusion score
Side-by-Side Comparison
| Feature | infra | intra |
|---|---|---|
| Definition | Ci-dessous ; plus bas. | Examen périodique, qui a lieu vers le milieu du semestre universitaire. |
Where the eye mixes infra and intra
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses infra with intra
These two trip readers on the page rather than in the ear: infra is \ɛ̃.fʁa\ while intra is \ɛ̃.tʁɑ\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - f in “infra” becomes t in “intra”, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 28569, derived from the frequency rank of both members and their visual similarity.
infra is recorded at frequency rank #18,228, classified as anadv, pronounced \ɛ̃.fʁa\. intra is at rank #10,341, tagged as anoun, pronounced \ɛ̃.tʁɑ\.
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 28569, this pair ranks #321,977 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of infra vs intra
Shared letters: ainr. Private to "infra": f. Private to "intra": t.
"infra" · 5 letters · shape VCCCV · "intra" · 5 letters · shape VCCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "infra" for "intra" ever safe?
In ordinary French text, does "infra" or "intra" 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 "infra" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "intra" - compare definitions side by side with the headword page. Word entry
- This pair ranks #321,977 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "infra" and "intra" also get mixed up with nearby pairs, the highest-scored neighbour is "IFRS vs infra". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #321,977 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.