rex
The verdict
“rex” is a moderately-common Portuguese word, ranked #12,766 in Portuguese word frequency and used as a noun.
- #12,766
- frequency rank, Portuguese
- 3
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - cachorro
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | rex |
| Language | Portuguese |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #12,766 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “rex” sits in Portuguese frequency
Spelling & Dictionary Insight
The Portuguese entry for rex is 3 letters long, classified as a noun. Corpus data places it at rank #12,766 in overall Portuguese word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "cachorro".
The misspelling generator found no plausible variants for rex, a sign its spelling follows regular Portuguese conventions. It also participates in 20 confusable-pair relationships, "ri", "rio", "rua", and more, where similar look or sound leads writers to substitute one word for another in context.
No documented word history exists for this headword, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct Portuguese form is rex, spelled R-E-X.
Definition
- 1cachorro
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 Portuguese corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "rex"?
What does "rex" mean?
What words are commonly confused with "rex"?
What language does "rex" come from?
Is PlainSpell free to use?
Using “rex”
The practical upshot for anyone who landed here from a spell-check.
- The one correct Portuguese spelling is R-E-X - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “ri” - see the side-by-side comparison. rex vs ri
- Browse more Portuguese words and confusable pairs in the same reference. Portuguese words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.