Which to use
“ADR” is a noun and “ardu” is an adjective - they look or sound alike but fill different roles in a sentence.
- #45,414
- “ADR” frequency rank
- #34,869
- “ardu” frequency rank
- 80283
- confusion score
Side-by-Side Comparison
| Feature | ADR | ardu |
|---|---|---|
| Definition | Accord relatif au transport international des marchandises dangereuses par route, fixant les conditions d’emballage, d’étiquetage des marchandises dangereuses, ainsi que celles concernant les véhicules utilisés et le transport lui-même. | D’accès difficile. |
Where the eye mixes ADR and ardu
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. ADR runs 3 letters (VCC) against ardu's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between ADR and ardu
These two trip readers on the page rather than in the ear: ADR is \ɑ.de.ɛʁ\ while ardu is \aʁ.dy\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 80283, derived from the frequency rank of both members and their visual similarity.
ADR is recorded at frequency rank #45,414, classified as anoun, pronounced \ɑ.de.ɛʁ\. ardu is at rank #34,869, tagged as anadj, pronounced \aʁ.dy\.
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 80283, this pair ranks #21,355 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of ADR vs ardu
Shared letters: adr. Private to "ADR": -. Private to "ardu": u.
"ADR" · 3 letters · shape VCC · "ardu" · 4 letters · shape VCCV
Known mistypes of this pair
- ardu ← adru · arddu · arrdu · arud · radu
Frequently Asked Questions
Do "ADR" and "ardu" mean the same thing in a sentence?
Which is more common, "ADR" or "ardu"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "ADR" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ardu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #21,355 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "ADR" and "ardu" also get mixed up with nearby pairs, the highest-scored neighbour is "ADR vs aur". 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 #21,355 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.