I'dvsiodoWhich spelling fits?

Quick tell: I'd is a contraction, iodo is a noun, so they fill different roles in a sentence.

Which to use

“I'd” is a contraction and “iodo” is a noun - they look or sound alike but fill different roles in a sentence.

#33,016
“I'd” frequency rank
#27,142
“iodo” frequency rank
60158
confusion score

Side-by-Side Comparison

Feature I'd iodo
Definition contração de I would (esse caso é o mais utilizado) 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

Letter map: I'd vs iodo

Shared letters muted; letters that set I'd and iodo apart highlighted. Shared run: 2. I'd runs 2 letters (VC) against iodo's 4 (VVCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
I'd
4 ch
iodo

Part-of-speech tell for I'd / iodo

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: I'd is acontraction and iodoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 60158, derived from the frequency rank of both members and their visual similarity.

I'd is recorded at frequency rank #33,016, classified as acontraction. iodo is at rank #27,142, tagged as anoun, pronounced /ˈjo.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 60158, this pair ranks #7,814 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of I'd vs iodo

Shared letters: di. Private to "I'd": -. Private to "iodo": o.

"I'd" · 2 letters · shape VC  ·  "iodo" · 4 letters · shape VVCV

Known mistypes of this pair

  • iodo ← idoo · ioddo · iood · oido

Frequently Asked Questions

Do "I'd" and "iodo" mean the same thing in a sentence?
No - they are not even the same part of speech. "I'd" is a contraction and "iodo" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "I'd" or "iodo" show up more?
"iodo" is the more common of the two: it sits at frequency rank #27,142 in our Portuguese list, against #33,016 for "I'd". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "I'd" and "iodo".

  • Full dictionary entry for "I'd" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "iodo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #7,814 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "I'd" and "iodo" also get mixed up with nearby pairs, the highest-scored neighbour is "I'd vs ino". 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 #7,814 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