badvsbomTell them apart

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

Which to use

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

#4,699
“bad” frequency rank
#96
“bom” frequency rank
4795
confusion score

Side-by-Side Comparison

Feature bad bom
Definition banho que corresponde plenamente ao que é exigido, desejado ou esperado quanto à sua natureza, adequação, função, eficácia, funcionamento etc. (falando de ser ou coisa)

Letter map: bad vs bom

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

3 ch
bad
3 ch
bom

Grammar separator: bad vs bom

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bad is anoun and bomanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 4795, 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/. bom is at rank #96, 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 4795, this pair ranks #69,987 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bad vs bom

Shared letters: b. Private to "bad": ad. Private to "bom": mo.

"bad" · 3 letters · shape CVC  ·  "bom" · 3 letters · shape CVC

Frequently Asked Questions

Do "bad" and "bom" mean the same thing in a sentence?
No - they are not even the same part of speech. "bad" is a noun and "bom" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "bad" or "bom" show up more?
"bom" is the more common of the two: it sits at frequency rank #96 in our Portuguese list, against #4,699 for "bad". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

You've compared "bad" and "bom". Here's where to go from here.

  • Full dictionary entry for "bad" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bom" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #69,987 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "bad" and "bom" also get mixed up with nearby pairs, the highest-scored neighbour is "bad vs bué". Nearby pair

Confusion rank #69,987 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