Which to use
“ach” is an intj and “arm” is an adjective - they look or sound alike but fill different roles in a sentence.
- #48,212
- “ach” frequency rank
- #27,355
- “arm” frequency rank
- 75567
- confusion score
Side-by-Side Comparison
| Feature | ach | arm |
|---|---|---|
| Definition | oh | pobre |
Letter map: ach vs arm
Shared letters muted; letters that set ach and arm apart highlighted. Shared run: 1. ach and arm follow the identical consonant-vowel pattern (VCC). Same shape at a glance is often the real trap, independent of shared letters.
Grammar separator: ach vs arm
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ach is anintj and armanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 75567, derived from the frequency rank of both members and their visual similarity.
ach is recorded at frequency rank #48,212, classified as anintj. arm is at rank #27,355, tagged as anadj, pronounced /aʁm/ ouvir^(fonte ?).
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 75567, this pair ranks #2,274 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of ach vs arm
Shared letters: a. Private to "ach": ch. Private to "arm": mr.
"ach" · 3 letters · shape VCC · "arm" · 3 letters · shape VCC
Frequently Asked Questions
Is swapping "ach" for "arm" ever safe?
Which is more common, "ach" or "arm"?
What to do next
You've compared "ach" and "arm". Here's where to go from here.
- Full dictionary entry for "ach" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arm" - compare definitions side by side with the headword page. Word entry
- This pair ranks #2,274 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ach" and "arm" also get mixed up with nearby pairs, the highest-scored neighbour is "ach vs acs". Nearby pair
Confusion rank #2,274 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.