Which to use
“árduo” is an adjective and “arrumo” is a verb - they look or sound alike but fill different roles in a sentence.
- #22,504
- “árduo” frequency rank
- #29,587
- “arrumo” frequency rank
- 52091
- confusion score
Side-by-Side Comparison
| Feature | árduo | arrumo |
|---|---|---|
| Definition | de difícil acesso | primeira pessoa do singular do presente indicativo do verbo arrumar |
Where the eye mixes árduo and arrumo
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. árduo runs 5 letters (VCCVV) against arrumo's 6 (VCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: árduo vs arrumo
These two trip readers on the page rather than in the ear: árduo is /ˈaɾ.dwu/ while arrumo is /ɐ.ˈRu.mu/. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 52091, derived from the frequency rank of both members and their visual similarity.
árduo is recorded at frequency rank #22,504, classified as anadj, pronounced /ˈaɾ.dwu/. arrumo is at rank #29,587, tagged as averb, pronounced /ɐ.ˈRu.mu/.
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 52091, this pair ranks #13,038 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of árduo vs arrumo
Shared letters: oru. Private to "árduo": dá. Private to "arrumo": am.
"árduo" · 5 letters · shape VCCVV · "arrumo" · 6 letters · shape VCCVCV
Known mistypes of this pair
- arrumo ← arrmuo · arrummo · arruom · arumo · arurmo · rarumo
Frequently Asked Questions
Can "árduo" and "arrumo" be used interchangeably?
Frequency check: "árduo" vs "arrumo" - which ranks higher?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "árduo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arrumo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #13,038 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "árduo" and "arrumo" also get mixed up with nearby pairs, the highest-scored neighbour is "arado vs árduo". 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 #13,038 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.