amo vs ao, What's the Difference?

Which to use

“amo” is a noun and “ao” is a contraction - they look or sound alike but fill different roles in a sentence.

#663
“amo” frequency rank: #27
“ao” frequency rank: 690
confusion score

Side-by-Side Comparison

Feature	amo	ao
Definition	patrão	contração da preposição a com o artigo definido o

Where the eye mixes amo and ao

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

3 ch

amo

2 ch

Why the eye confuses amo with ao

These two trip readers on the page rather than in the ear: amo is /ˈɐ.mu/ while ao is /aw/. 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 contraction), which is usually the fastest check. Our composite confusion score for this pair is 690, derived from the frequency rank of both members and their visual similarity.

amo is recorded at frequency rank #663, classified as anoun, pronounced /ˈɐ.mu/. ao is at rank #27, tagged as acontraction, pronounced /aw/.

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 690, this pair ranks #74,966 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of amo vs ao

Shared letters: ao. Private to "amo": m. Private to "ao": -.

"amo" · 3 letters · shape VCV · "ao" · 2 letters · shape VV

Frequently Asked Questions

Is swapping "amo" for "ao" ever safe?

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

In ordinary Portuguese text, does "amo" or "ao" show up more?

"ao" is the more common of the two: it sits at frequency rank #27 in our Portuguese list, against #663 for "amo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

Full dictionary entry for "amo" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ao" - compare definitions side by side with the headword page. Word entry
This pair ranks #74,966 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"amo" and "ao" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs amo". Nearby pair

Confusion rank #74,966 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.