aro vs at, What's the Difference?

Which to use

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

#22,868
“aro” frequency rank: #1,457
“at” frequency rank: 24325
confusion score

Side-by-Side Comparison

Feature	aro	at
Definition	caixilho de madeira para os vãos das portas e janelas	em, a

Where the eye mixes aro and at

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

aro

2 ch

Why the eye confuses aro with at

These two trip readers on the page rather than in the ear: aro is /ˈa.ɾu/ while at is \æt\. 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 preposition), which is usually the fastest check. Our composite confusion score for this pair is 24325, derived from the frequency rank of both members and their visual similarity.

aro is recorded at frequency rank #22,868, classified as anoun, pronounced /ˈa.ɾu/. at is at rank #1,457, tagged as aprep, pronounced \æt\.

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 24325, this pair ranks #45,319 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of aro vs at

Shared letters: a. Private to "aro": or. Private to "at": t.

"aro" · 3 letters · shape VCV · "at" · 2 letters · shape VC

Frequently Asked Questions

Do "aro" and "at" mean the same thing in a sentence?

No - they are not even the same part of speech. "aro" is a noun and "at" a preposition, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "aro" vs "at" - which ranks higher?

"at" is the more common of the two: it sits at frequency rank #1,457 in our Portuguese list, against #22,868 for "aro". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

Full dictionary entry for "aro" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "at" - compare definitions side by side with the headword page. Word entry
This pair ranks #45,319 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"aro" and "at" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs aro". Nearby pair

Confusion rank #45,319 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.