achvsadoWhich spelling fits?

Quick tell: ach is a intj, ado is a noun, so they fill different roles in a sentence.

Which to use

“ach” is an intj and “ado” is a noun - they look or sound alike but fill different roles in a sentence.

#48,212
“ach” frequency rank
#31,628
“ado” frequency rank
79840
confusion score

Side-by-Side Comparison

Feature ach ado
Definition oh a fazer

Letter map: ach vs ado

Shared letters muted; letters that set ach and ado apart highlighted. Shared run: 1. ach (VCC) and ado (VCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
ach
3 ch
ado

Part-of-speech tell for ach / ado

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ach is anintj and adoanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 79840, derived from the frequency rank of both members and their visual similarity.

ach is recorded at frequency rank #48,212, classified as anintj. ado is at rank #31,628, tagged as anoun.

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 79840, this pair ranks #1,436 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ach vs ado

Shared letters: a. Private to "ach": ch. Private to "ado": do.

"ach" · 3 letters · shape VCC  ·  "ado" · 3 letters · shape VCV

Frequently Asked Questions

Is swapping "ach" for "ado" ever safe?
No - they are not even the same part of speech. "ach" is an intj and "ado" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "ach" or "ado" show up more?
"ado" is the more common of the two: it sits at frequency rank #31,628 in our Portuguese list, against #48,212 for "ach". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "ach" and "ado". Here's where to go from here.

  • Full dictionary entry for "ach" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ado" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,436 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ach" and "ado" also get mixed up with nearby pairs, the highest-scored neighbour is "ach vs acs". Nearby pair

Confusion rank #1,436 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