trásvstrêsWhat's the difference?

Quick tell: trás is a adverb, três is a num, so they fill different roles in a sentence.

Which to use

“trás” is an adverb and “três” is a num - they look or sound alike but fill different roles in a sentence.

#860
“trás” frequency rank
#167
“três” frequency rank
1027
confusion score

Side-by-Side Comparison

Feature trás três
Definition depois de número equivalente a dois mais um; cardinalidade de um conjunto que contenha dois elementos e outro elemento distinto; representado pelo símbolo 3 (algarismos arábicos) ou III (algarismos romanos)

Letter map: trás vs três

Shared letters muted; letters that set trás and três apart highlighted. Shared run: 3.

4 ch
trás
4 ch
três

Grammar separator: trás vs três

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: trás is anadverb and trêsanum. On the page they differ by a single letter - á in “trás” becomes ê in “três”. Our composite confusion score for this pair is 1027, derived from the frequency rank of both members and their visual similarity.

trás is recorded at frequency rank #860, classified as anadv. três is at rank #167, tagged as anum, pronounced /ˈtɾeʃ/.

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 1027, this pair ranks #74,606 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of trás vs três

Shared letters: rst. Private to "trás": á. Private to "três": ê.

"trás" · 4 letters · shape CCVC  ·  "três" · 4 letters · shape CCVC

Frequently Asked Questions

Can "trás" and "três" be used interchangeably?
No - they are not even the same part of speech. "trás" is an adverb and "três" a num, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "trás" or "três" show up more?
"três" is the more common of the two: it sits at frequency rank #167 in our Portuguese list, against #860 for "trás". 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 "trás" and "três". Here's where to go from here.

  • Full dictionary entry for "trás" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "três" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #74,606 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "trás" and "três" also get mixed up with nearby pairs, the highest-scored neighbour is "trema vs três". Nearby pair

Confusion rank #74,606 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