badvsbutWhat's the difference?

Quick tell: bad is a noun, but is a conjunction, so they fill different roles in a sentence.

Which to use

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

#4,699
“bad” frequency rank
#7,254
“but” frequency rank
11953
confusion score

Side-by-Side Comparison

Feature bad but
Definition banho mas, porém, todavia

Letter map: bad vs but

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

3 ch
bad
3 ch
but

Role in the sentence - bad and but

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bad is anoun and butaconjunction. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 11953, 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/. but is at rank #7,254, tagged as aconj.

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 11953, this pair ranks #60,772 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bad vs but

Shared letters: b. Private to "bad": ad. Private to "but": tu.

"bad" · 3 letters · shape CVC  ·  "but" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "bad" for "but" ever safe?
No - they are not even the same part of speech. "bad" is a noun and "but" a conjunction, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "bad" or "but"?
"bad" is the more common of the two: it sits at frequency rank #4,699 in our Portuguese list, against #7,254 for "but". 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 "bad" and "but". Here's where to go from here.

  • Full dictionary entry for "bad" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "but" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #60,772 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "bad" and "but" also get mixed up with nearby pairs, the highest-scored neighbour is "bué vs but". Nearby pair

Confusion rank #60,772 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