Which to use
“rei” and “rex” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #794
- “rei” frequency rank
- #12,766
- “rex” frequency rank
- 13560
- confusion score
Side-by-Side Comparison
| Feature | rei | rex |
|---|---|---|
| Definition | soberano; monarca; czar | cachorro |
Letter map: rei vs rex
Shared letters muted; letters that set rei and rex apart highlighted. Shared run: 2.
Pair insight - rei / rex
rei and rex are indexed as a confusable Portuguese pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - i in “rei” becomes x in “rex”. Our composite confusion score for this pair is 13560, derived from the frequency rank of both members and their visual similarity.
rei is recorded at frequency rank #794, classified as anoun, pronounced /ˈRɐj/. rex is at rank #12,766, 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 13560, this pair ranks #58,733 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of rei vs rex
Shared letters: er. Private to "rei": i. Private to "rex": x.
"rei" · 3 letters · shape CVV · "rex" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "rei" for "rex" ever safe?
Frequency check: "rei" vs "rex" - which ranks higher?
After this comparison
Done with this confusable. These links stay specific to "rei" and "rex".
- Full dictionary entry for "rei" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rex" - compare definitions side by side with the headword page. Word entry
- This pair ranks #58,733 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "rei" and "rex" also get mixed up with nearby pairs, the highest-scored neighbour is "revi vs rex". Nearby pair
Confusion rank #58,733 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.