retovsrexConfusable pair

Quick tell: reto is a adjective, rex is a noun, so they fill different roles in a sentence.

Which to use

“reto” is an adjective and “rex” is a noun - they look or sound alike but fill different roles in a sentence.

#10,954
“reto” frequency rank
#12,766
“rex” frequency rank
23720
confusion score

Side-by-Side Comparison

Feature reto rex
Definition que não tem curvatura, sinuosidade ou inflexão; que segue sempre a mesma direção; direito, direto cachorro

Letter map: reto vs rex

Shared letters muted; letters that set reto and rex apart highlighted. Shared run: 2.

4 ch
reto
3 ch
rex

Role in the sentence - reto and rex

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: reto is anadjective and rexanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 23720, derived from the frequency rank of both members and their visual similarity.

reto is recorded at frequency rank #10,954, classified as anadj. 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 23720, this pair ranks #46,053 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of reto vs rex

Shared letters: er. Private to "reto": ot. Private to "rex": x.

"reto" · 4 letters · shape CVCV  ·  "rex" · 3 letters · shape CVC

Known mistypes of this pair

  • retoerto · reot · retto · rreto · rteo

Frequently Asked Questions

Can "reto" and "rex" be used interchangeably?
No - they are not even the same part of speech. "reto" is an adjective and "rex" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "reto" or "rex"?
"reto" is the more common of the two: it sits at frequency rank #10,954 in our Portuguese list, against #12,766 for "rex". 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 "reto" and "rex". Here's where to go from here.

  • Full dictionary entry for "reto" 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 #46,053 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "reto" and "rex" also get mixed up with nearby pairs, the highest-scored neighbour is "ratio vs reto". 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 #46,053 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