badvsbonConfusable pair

Quick tell: bad is a noun, bon is an adjective, so they fill different roles in a sentence.

Which to use

“bad” is a noun and “bon” is an adjective - they look or sound alike but fill different roles in a sentence.

#4,699
“bad” frequency rank
#10,479
“bon” frequency rank
15178
confusion score

Side-by-Side Comparison

Feature bad bon
Definition banho bom

Letter map: bad vs bon

Shared letters muted; letters that set bad and bon apart highlighted. Shared run: 1.

3 ch
bad
3 ch
bon

Role in the sentence - bad and bon

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bad is anoun and bonanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 15178, derived from the frequency rank of both members and their visual similarity.

bad is recorded at frequency rank #4,699, classified as anoun, pronounced /bɑt/. bon is at rank #10,479, tagged as anadj.

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 15178, this pair ranks #56,711 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of bad vs bon

Shared letters: b. Private to "bad": ad. Private to "bon": no.

"bad" · 3 letters · shape CVC  ·  "bon" · 3 letters · shape CVC

Frequently Asked Questions

Can "bad" and "bon" be used interchangeably?
No - they are not even the same part of speech. "bad" is a noun and "bon" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "bad" or "bon" show up more?
"bad" is the more common of the two: it sits at frequency rank #4,699 in our Portuguese list, against #10,479 for "bon". 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 "bad" and "bon".

  • Full dictionary entry for "bad" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bon" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #56,711 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "bad" and "bon" also get mixed up with nearby pairs, the highest-scored neighbour is "bon vs bué". Nearby pair

Confusion rank #56,711 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