cujovscustoConfusable pair

Quick tell: cujo is a pronoun, custo is a noun, so they fill different roles in a sentence.

Which to use

“cujo” is a pronoun and “custo” is a noun - they look or sound alike but fill different roles in a sentence.

#1,638
“cujo” frequency rank
#1,773
“custo” frequency rank
3411
confusion score

Side-by-Side Comparison

Feature cujo custo
Definition relaciona dois substantivos, um antecedente e outro consequente, sendo este último possuidor de algo (qualidade, condição, sentimento, ser etc.) designado pelo primeiro; equivale a de que, de quem, do/da qual, dos/das quais o quanto algo custa, o preço de algo

Letter map: cujo vs custo

Shared letters muted; letters that set cujo and custo apart highlighted. Shared run: 3.

4 ch
cujo
5 ch
custo

Role in the sentence - cujo and custo

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cujo is apronoun and custoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 3411, derived from the frequency rank of both members and their visual similarity.

cujo is recorded at frequency rank #1,638, classified as apron. custo is at rank #1,773, tagged as anoun, pronounced /ˈkuʃ.tu/.

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 3411, this pair ranks #71,746 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of cujo vs custo

Shared letters: cou. Private to "cujo": j. Private to "custo": st.

"cujo" · 4 letters · shape CVCV  ·  "custo" · 5 letters · shape CVCCV

Known mistypes of this pair

  • cujoccujo · cjuo · cujjo · cuoj · ucjo
  • custoccusto · csuto · cusot · cussto · custto · cutso · ucsto

Frequently Asked Questions

Can "cujo" and "custo" be used interchangeably?
No - they are not even the same part of speech. "cujo" is a pronoun and "custo" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "cujo" or "custo" show up more?
"cujo" is the more common of the two: it sits at frequency rank #1,638 in our Portuguese list, against #1,773 for "custo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "cujo" and "custo". Here's where to go from here.

  • Full dictionary entry for "cujo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "custo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #71,746 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "cujo" and "custo" also get mixed up with nearby pairs, the highest-scored neighbour is "ciao vs cujo". 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 #71,746 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