sidovssódioConfusable pair

Quick tell: sido is a verb, sódio is a noun, so they fill different roles in a sentence.

Which to use

“sido” is a verb and “sódio” is a noun - they look or sound alike but fill different roles in a sentence.

#218
“sido” frequency rank
#10,278
“sódio” frequency rank
10496
confusion score

Side-by-Side Comparison

Feature sido sódio
Definition masculino singular do particípio passado do verbo ser: elemento químico de símbolo Na, possui o número atômico 11 e massa atômica relativa de 22.989; é um metal alcalino, sólido na temperatura ambiente, com coloração branco prateado; é encontrado em grande quantidade na forma de cloreto de sódio (sal) nas águas marinhas; é a principal matéria-prima para obtenção de outros sais

Where the eye mixes sido and sódio

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. sido runs 4 letters (CVCV) against sódio's 5 (CVCVV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
sido
5 ch
sódio

Visual trap between sido and sódio

These two trip readers on the page rather than in the ear: sido is /ˈsi.dʊ/ while sódio is /ˈsɔdju/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 10496, derived from the frequency rank of both members and their visual similarity.

sido is recorded at frequency rank #218, classified as averb, pronounced /ˈsi.dʊ/. sódio is at rank #10,278, tagged as anoun, pronounced /ˈsɔdju/.

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 10496, this pair ranks #62,591 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sido vs sódio

Shared letters: dios. Private to "sido": -. Private to "sódio": ó.

"sido" · 4 letters · shape CVCV  ·  "sódio" · 5 letters · shape CVCVV

Known mistypes of this pair

  • sidoisdo · sdio · siddo · siod · ssido

Frequently Asked Questions

Is swapping "sido" for "sódio" ever safe?
No - they are not even the same part of speech. "sido" is a verb and "sódio" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "sido" or "sódio" show up more?
"sido" is the more common of the two: it sits at frequency rank #218 in our Portuguese list, against #10,278 for "sódio". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Eye-level mix-up between "sido" and "sódio" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "sido" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sódio" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #62,591 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sido" and "sódio" also get mixed up with nearby pairs, the highest-scored neighbour is "sódio vs soir". 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 #62,591 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