entãovsETAWhat's the difference?

Quick tell: então is a adverb, ETA is an abbrev, so they fill different roles in a sentence.

Which to use

“então” is an adverb and “ETA” is an abbrev - they look or sound alike but fill different roles in a sentence.

#120
“então” frequency rank
#18,862
“ETA” frequency rank
18982
confusion score

Side-by-Side Comparison

Feature então ETA
Definition naquele momento Euskadi Ta Askatasuna ("Pátria Basca e Liberdade"), organização paramilitar que defende a independência do País Basco em relação à Espanha.

Where the eye mixes então and ETA

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. então runs 5 letters (VCCVV) against ETA's 3 (VCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
então
3 ch
ETA

Look-alike desk: então vs ETA

These two trip readers on the page rather than in the ear: então is /ẽ.ˈtɐ̃w̃/ while ETA is /ˈɛː.ta/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adverb vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 18982, derived from the frequency rank of both members and their visual similarity.

então is recorded at frequency rank #120, classified as anadv, pronounced /ẽ.ˈtɐ̃w̃/. ETA is at rank #18,862, tagged as anabbrev, pronounced /ˈɛː.ta/.

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 18982, this pair ranks #51,888 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of então vs ETA

Shared letters: et. Private to "então": noã. Private to "ETA": a.

"então" · 5 letters · shape VCCVV  ·  "ETA" · 3 letters · shape VCV

Frequently Asked Questions

Can "então" and "ETA" be used interchangeably?
No - they are not even the same part of speech. "então" is an adverb and "ETA" an abbrev, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "então" or "ETA" show up more?
"então" is the more common of the two: it sits at frequency rank #120 in our Portuguese list, against #18,862 for "ETA". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "então" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ETA" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #51,888 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "então" and "ETA" also get mixed up with nearby pairs, the highest-scored neighbour is "ETA vs être". Nearby pair

Confusion rank #51,888 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