iodovsiradoTell them apart

Quick tell: iodo is a noun, irado is an adjective, so they fill different roles in a sentence.

Which to use

“iodo” is a noun and “irado” is an adjective - they look or sound alike but fill different roles in a sentence.

#27,142
“iodo” frequency rank
#22,696
“irado” frequency rank
49838
confusion score

Side-by-Side Comparison

Feature iodo irado
Definition elemento químico de símbolo I, possui o número atômico 53 e massa atômica relativa 126,904 u; é um não-metal, halogênio, de cor negra; apesar de abundante, não é encontrado livre na natureza, ocorrendo principalmente na forma de iodetos e iodatos em rochas, solos, água do mar e depósitos de sal; é utilizado principalmente na medicina, como desinfetante; é um elemento essencial para o corpo humano; sua falta provoca o hipotiroidismo causando o bócio e a mixedema que sente ira

Where the eye mixes iodo and irado

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

4 ch
iodo
5 ch
irado

Visual trap between iodo and irado

These two trip readers on the page rather than in the ear: iodo is /ˈjo.du/ while irado is /i.ˈɾa.du/. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 49838, derived from the frequency rank of both members and their visual similarity.

iodo is recorded at frequency rank #27,142, classified as anoun, pronounced /ˈjo.du/. irado is at rank #22,696, tagged as anadj, pronounced /i.ˈɾa.du/.

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 49838, this pair ranks #15,143 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of iodo vs irado

Shared letters: dio. Private to "iodo": -. Private to "irado": ar.

"iodo" · 4 letters · shape VVCV  ·  "irado" · 5 letters · shape VCVCV

Known mistypes of this pair

  • iodo ← idoo · ioddo · iood · oido
  • irado ← iardo · iraddo · iraod · irdao · irrado · riado

Frequently Asked Questions

Do "iodo" and "irado" mean the same thing in a sentence?
No - they are not even the same part of speech. "iodo" is a noun and "irado" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "iodo" vs "irado" - which ranks higher?
"irado" is the more common of the two: it sits at frequency rank #22,696 in our Portuguese list, against #27,142 for "iodo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "iodo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "irado" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #15,143 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "iodo" and "irado" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs iodo". 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 #15,143 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