siglavssignoWhich spelling fits?

Which to use

“sigla” and “signo” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#6,124
“sigla” frequency rank
#10,792
“signo” frequency rank
16916
confusion score

Side-by-Side Comparison

Feature sigla signo
Definition no sentido lato indica toda a classe de abreviaturas sinal, marca

Where the eye mixes sigla and signo

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. sigla and signo follow the identical consonant-vowel pattern (CVCCV). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
sigla
5 ch
signo

Why the eye confuses sigla with signo

A purely visual mix-up. sigla (/ˈsi.ɡlɐ/) and signo (/ˈsi.ɡnu/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 16916, derived from the frequency rank of both members and their visual similarity.

sigla is recorded at frequency rank #6,124, classified as anoun, pronounced /ˈsi.ɡlɐ/. signo is at rank #10,792, tagged as anoun, pronounced /ˈsi.ɡnu/.

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 16916, this pair ranks #54,497 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sigla vs signo

Shared letters: gis. Private to "sigla": al. Private to "signo": no.

"sigla" · 5 letters · shape CVCCV  ·  "signo" · 5 letters · shape CVCCV

Known mistypes of this pair

  • sigla ← isgla · sgila · sigal · siggla · siglla · silga · ssigla
  • signo ← isgno · sgino · siggno · signno · sigon · singo · ssigno

Frequently Asked Questions

Can "sigla" and "signo" be used interchangeably?
No. They are said differently (/ˈsi.ɡlɐ/ versus /ˈsi.ɡnu/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "sigla" or "signo"?
"sigla" is the more common of the two: it sits at frequency rank #6,124 in our Portuguese list, against #10,792 for "signo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "sigla" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "signo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #54,497 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sigla" and "signo" also get mixed up with nearby pairs, the highest-scored neighbour is "signo vs sueño". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #54,497 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