RatvsreiWhat's the difference?

Which to use

“Rat” and “rei” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#37,067
“Rat” frequency rank
#794
“rei” frequency rank
37861
confusion score

Side-by-Side Comparison

Feature Rat rei
Definition conselho soberano; monarca; czar

Where the eye mixes Rat and rei

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. Rat (CVC) and rei (CVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
Rat
3 ch
rei

Why the eye confuses Rat with rei

A purely visual mix-up. Rat (/raːt/) and rei (/ˈRɐj/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 37861, derived from the frequency rank of both members and their visual similarity.

Rat is recorded at frequency rank #37,067, classified as anoun, pronounced /raːt/. rei is at rank #794, tagged as anoun, pronounced /ˈRɐj/.

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 37861, this pair ranks #28,696 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Rat vs rei

Shared letters: r. Private to "Rat": at. Private to "rei": ei.

"Rat" · 3 letters · shape CVC  ·  "rei" · 3 letters · shape CVV

Frequently Asked Questions

Can "Rat" and "rei" be used interchangeably?
No. They are said differently (/raːt/ versus /ˈRɐj/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "Rat" vs "rei" - which ranks higher?
"rei" is the more common of the two: it sits at frequency rank #794 in our Portuguese list, against #37,067 for "Rat". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "Rat" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "rei" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #28,696 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "Rat" and "rei" also get mixed up with nearby pairs, the highest-scored neighbour is "rabi vs Rat". Nearby pair

Confusion rank #28,696 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