ado vs ao, What's the Difference?

Which to use

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

#31,628
“ado” frequency rank: #27
“ao” frequency rank: 31655
confusion score

Side-by-Side Comparison

Feature	ado	ao
Definition	a fazer	contração da preposição a com o artigo definido o

Letter map: ado vs ao

Shared letters muted; letters that set ado and ao apart highlighted. Shared run: 2.

3 ch

ado

2 ch

Role in the sentence - ado and ao

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ado is anoun and aoacontraction. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 31655, derived from the frequency rank of both members and their visual similarity.

ado is recorded at frequency rank #31,628, classified as anoun. 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 31655, this pair ranks #36,364 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ado vs ao

Shared letters: ao. Private to "ado": d. Private to "ao": -.

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

Frequently Asked Questions

Do "ado" and "ao" mean the same thing in a sentence?

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

Frequency check: "ado" vs "ao" - which ranks higher?

"ao" is the more common of the two: it sits at frequency rank #27 in our Portuguese list, against #31,628 for "ado". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pair "ado" vs "ao" is on the table, pick a follow-up below.

Full dictionary entry for "ado" 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 #36,364 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ado" and "ao" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ado". Nearby pair

Confusion rank #36,364 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.