adesãovsadoçãoWhich spelling fits?

Which to use

“adesão” and “adoção” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#6,364
“adesão” frequency rank
#5,487
“adoção” frequency rank
11851
confusion score

Side-by-Side Comparison

Feature adesão adoção
Definition ato, processo ou efeito de aderir ação ou resultado de adotar, de aceitar (alguém ou algo)

Where the eye mixes adesão and adoção

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. adesão and adoção follow the identical consonant-vowel pattern (VCVCVV). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
adesão
6 ch
adoção

Why the eye confuses adesão with adoção

A purely visual mix-up. adesão (/ɐ.dɨ.ˈzɐ̃w̃/) and adoção (/a.doˈsɐ̃w̃/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 11851, derived from the frequency rank of both members and their visual similarity.

adesão is recorded at frequency rank #6,364, classified as anoun, pronounced /ɐ.dɨ.ˈzɐ̃w̃/. adoção is at rank #5,487, tagged as anoun, pronounced /a.doˈsɐ̃w̃/.

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 11851, this pair ranks #60,910 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of adesão vs adoção

Shared letters: adoã. Private to "adesão": es. Private to "adoção": ç.

"adesão" · 6 letters · shape VCVCVV  ·  "adoção" · 6 letters · shape VCVCVV

Frequently Asked Questions

Can "adesão" and "adoção" be used interchangeably?
No. They are said differently (/ɐ.dɨ.ˈzɐ̃w̃/ versus /a.doˈsɐ̃w̃/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Portuguese text, does "adesão" or "adoção" show up more?
"adoção" is the more common of the two: it sits at frequency rank #5,487 in our Portuguese list, against #6,364 for "adesão". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "adesão" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "adoção" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #60,910 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "adesão" and "adoção" also get mixed up with nearby pairs, the highest-scored neighbour is "abdução vs adoção". Nearby pair

Confusion rank #60,910 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