Which to use
“ado” is a noun and “árduo” is an adjective - they look or sound alike but fill different roles in a sentence.
- #31,628
- “ado” frequency rank
- #22,504
- “árduo” frequency rank
- 54132
- confusion score
Side-by-Side Comparison
| Feature | ado | árduo |
|---|---|---|
| Definition | a fazer | de difícil acesso |
Letter map: ado vs árduo
Shared letters muted; letters that set ado and árduo apart highlighted. Shared run: 2.
Grammar separator: ado vs árduo
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ado is anoun and árduoanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 54132, derived from the frequency rank of both members and their visual similarity.
ado is recorded at frequency rank #31,628, classified as anoun. árduo is at rank #22,504, tagged as anadj, pronounced /ˈaɾ.dwu/.
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 54132, this pair ranks #11,519 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of ado vs árduo
Shared letters: do. Private to "ado": a. Private to "árduo": ruá.
"ado" · 3 letters · shape VCV · "árduo" · 5 letters · shape VCCVV
Frequently Asked Questions
Can "ado" and "árduo" be used interchangeably?
Which is more common, "ado" or "árduo"?
After this comparison
Done with this confusable. These links stay specific to "ado" and "árduo".
- Full dictionary entry for "ado" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "árduo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #11,519 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ado" and "árduo" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ado". Nearby pair
Confusion rank #11,519 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.