Which to use
“défaillant” is an adjective and “détaillant” is a noun - they look or sound alike but fill different roles in a sentence.
- #29,327
- “défaillant” frequency rank
- #25,634
- “détaillant” frequency rank
- 54961
- confusion score
Side-by-Side Comparison
| Feature | défaillant | détaillant |
|---|---|---|
| Definition | Qui fait défaut, en parlant des forces physiques ou morales. | Personne qui vend au détail. |
Where the eye mixes défaillant and détaillant
Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. défaillant and détaillant follow the identical consonant-vowel pattern (CVCVVCCVCC). Same shape at a glance is often the real trap, independent of shared letters.
Visual trap between défaillant and détaillant
These two trip readers on the page rather than in the ear: défaillant is \de.fa.jɑ̃\ while détaillant is \de.ta.jɑ̃\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - f in “défaillant” becomes t in “détaillant”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 54961, derived from the frequency rank of both members and their visual similarity.
défaillant is recorded at frequency rank #29,327, classified as anadj, pronounced \de.fa.jɑ̃\. détaillant is at rank #25,634, tagged as anoun, pronounced \de.ta.jɑ̃\.
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 54961, this pair ranks #130,534 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of défaillant vs détaillant
Shared letters: adilnté. Private to "défaillant": f. Private to "détaillant": -.
"défaillant" · 10 letters · shape CVCVVCCVCC · "détaillant" · 10 letters · shape CVCVVCCVCC
Frequently Asked Questions
Do "défaillant" and "détaillant" mean the same thing in a sentence?
In ordinary French text, does "défaillant" or "détaillant" show up more?
Useful next steps
Eye-level mix-up between "défaillant" and "détaillant" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "défaillant" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "détaillant" - compare definitions side by side with the headword page. Word entry
- This pair ranks #130,534 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "défaillant" and "détaillant" also get mixed up with nearby pairs, the highest-scored neighbour is "défaillant vs défaillante". Nearby pair
Confusion rank #130,534 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.