rivsruimWhat's the difference?

Quick tell: ri is a preposition, ruim is an adjective, so they fill different roles in a sentence.

Which to use

“ri” is a preposition and “ruim” is an adjective - they look or sound alike but fill different roles in a sentence.

#7,570
“ri” frequency rank
#1,200
“ruim” frequency rank
8770
confusion score

Side-by-Side Comparison

Feature ri ruim
Definition para, contra mau

Letter map: ri vs ruim

Shared letters muted; letters that set ri and ruim apart highlighted. Shared run: 2.

2 ch
ri
4 ch
ruim

Grammar separator: ri vs ruim

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ri is apreposition and ruimanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 8770, derived from the frequency rank of both members and their visual similarity.

ri is recorded at frequency rank #7,570, classified as aprep. ruim is at rank #1,200, tagged as anadj, pronounced /Ru.ˈĩ/.

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 8770, this pair ranks #64,884 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ri vs ruim

Shared letters: ir. Private to "ri": -. Private to "ruim": mu.

"ri" · 2 letters · shape CV  ·  "ruim" · 4 letters · shape CVVC

Known mistypes of this pair

  • ruimrium · rruim · ruimm · rumi · urim

Frequently Asked Questions

Is swapping "ri" for "ruim" ever safe?
No - they are not even the same part of speech. "ri" is a preposition and "ruim" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "ri" or "ruim" show up more?
"ruim" is the more common of the two: it sits at frequency rank #1,200 in our Portuguese list, against #7,570 for "ri". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "ri" and "ruim". Here's where to go from here.

  • Full dictionary entry for "ri" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ruim" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #64,884 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ri" and "ruim" also get mixed up with nearby pairs, the highest-scored neighbour is "rabi vs ri". 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 #64,884 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