iodovsioiôTell them apart

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

Which to use

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

#27,142
“iodo” frequency rank
#48,990
“ioiô” frequency rank
76132
confusion score

Side-by-Side Comparison

Feature iodo ioiô
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 se começa, se para e se volta a fazer

Letter map: iodo vs ioiô

Shared letters muted; letters that set iodo and ioiô apart highlighted. Shared run: 2. iodo (VVCV) and ioiô (VVVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

4 ch
iodo
4 ch
ioiô

Part-of-speech tell for iodo / ioiô

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: iodo is anoun and ioiôanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 76132, 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/. ioiô is at rank #48,990, tagged as anadj.

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 76132, this pair ranks #2,154 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of iodo vs ioiô

Shared letters: io. Private to "iodo": d. Private to "ioiô": ô.

"iodo" · 4 letters · shape VVCV  ·  "ioiô" · 4 letters · shape VVVV

Known mistypes of this pair

  • iodo ← idoo · ioddo · iood · oido

Frequently Asked Questions

Do "iodo" and "ioiô" mean the same thing in a sentence?
No - they are not even the same part of speech. "iodo" is a noun and "ioiô" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "iodo" or "ioiô" show up more?
"iodo" is the more common of the two: it sits at frequency rank #27,142 in our Portuguese list, against #48,990 for "ioiô". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "iodo" vs "ioiô" is on the table, pick a follow-up below.

  • Full dictionary entry for "iodo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ioiô" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #2,154 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "iodo" and "ioiô" also get mixed up with nearby pairs, the highest-scored neighbour is "ino vs ioiô". 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 #2,154 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