arabvsaroWhich spelling fits?

Quick tell: arab is a adjective, aro is a noun, so they fill different roles in a sentence.

Which to use

“arab” is an adjective and “aro” is a noun - they look or sound alike but fill different roles in a sentence.

#34,137
“arab” frequency rank
#22,868
“aro” frequency rank
57005
confusion score

Side-by-Side Comparison

Feature arab aro
Definition árabe, arábico caixilho de madeira para os vãos das portas e janelas

Where the eye mixes arab and aro

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
arab
3 ch
aro

Visual trap between arab and aro

These two trip readers on the page rather than in the ear: arab is /ˈɑː.ʁap/ while aro is /ˈa.ɾu/. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 57005, derived from the frequency rank of both members and their visual similarity.

arab is recorded at frequency rank #34,137, classified as anadj, pronounced /ˈɑː.ʁap/. aro is at rank #22,868, tagged as anoun, pronounced /ˈa.ɾu/.

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 57005, this pair ranks #9,593 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of arab vs aro

Shared letters: ar. Private to "arab": b. Private to "aro": o.

"arab" · 4 letters · shape VCVC  ·  "aro" · 3 letters · shape VCV

Known mistypes of this pair

  • arabaarb · arabb · arba · arrab · raab

Frequently Asked Questions

Is swapping "arab" for "aro" ever safe?
No - they are not even the same part of speech. "arab" is an adjective and "aro" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "arab" or "aro"?
"aro" is the more common of the two: it sits at frequency rank #22,868 in our Portuguese list, against #34,137 for "arab". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "arab" and "aro" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "arab" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #9,593 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "arab" and "aro" also get mixed up with nearby pairs, the highest-scored neighbour is "arab vs atar". 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 #9,593 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list