assinadovsassinarTell them apart

Quick tell: assinado is a adjective, assinar is a verb, so they fill different roles in a sentence.

Which to use

“assinado” is an adjective and “assinar” is a verb - they look or sound alike but fill different roles in a sentence.

#3,661
“assinado” frequency rank
#3,959
“assinar” frequency rank
7620
confusion score

Side-by-Side Comparison

Feature assinado assinar
Definition autenticado; comprovado por meio de uma assinatura autenticar com o seu nome ou firma

Letter map: assinado vs assinar

Shared letters muted; letters that set assinado and assinar apart highlighted. Shared run: 6. assinado runs 8 letters (VCCVCVCV) against assinar's 7 (VCCVCVC) - the length gap alone is often enough to separate them once you know to check it.

8 ch
assinado
7 ch
assinar

Part-of-speech tell for assinado / assinar

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: assinado is anadjective and assinaraverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 7620, derived from the frequency rank of both members and their visual similarity.

assinado is recorded at frequency rank #3,661, classified as anadj. assinar is at rank #3,959, tagged as averb, pronounced /ɐ.si.ˈnaɾ/.

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 7620, this pair ranks #66,492 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of assinado vs assinar

Shared letters: ains. Private to "assinado": do. Private to "assinar": r.

"assinado" · 8 letters · shape VCCVCVCV  ·  "assinar" · 7 letters · shape VCCVCVC

Known mistypes of this pair

  • assinado ← asinado · asisnado · assiando · assinaddo · assinaod · assindao · assinnado · assniado
  • assinar ← asinar · asisnar · assianr · assinarr · assinnar · assinra · assniar · sasinar

Frequently Asked Questions

Do "assinado" and "assinar" mean the same thing in a sentence?
No - they are not even the same part of speech. "assinado" is an adjective and "assinar" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "assinado" or "assinar" show up more?
"assinado" is the more common of the two: it sits at frequency rank #3,661 in our Portuguese list, against #3,959 for "assinar". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "assinado" and "assinar".

  • Full dictionary entry for "assinado" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "assinar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #66,492 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "assinado" and "assinar" also get mixed up with nearby pairs, the highest-scored neighbour is "afinado vs assinado". 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 #66,492 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