Which to use
“Register” is a noun and “registrar” is a verb - they look or sound alike but fill different roles in a sentence.
- #29,120
- “Register” frequency rank
- #5,787
- “registrar” frequency rank
- 34907
- confusion score
Side-by-Side Comparison
| Feature | Register | registrar |
|---|---|---|
| Definition | lista | anotar fatos por escrito; efetuar lançamentos em livros públicos |
Where the eye mixes Register and registrar
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. Register runs 8 letters (CVCVCCVC) against registrar's 9 (CVCVCCCVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses Register with registrar
These two trip readers on the page rather than in the ear: Register is /reˈɡɪstɐ/ while registrar is /xe.ʒis.ˈtɾax/ ou /xe.ʒiʃ.ˈtɾax/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 34907, derived from the frequency rank of both members and their visual similarity.
Register is recorded at frequency rank #29,120, classified as anoun, pronounced /reˈɡɪstɐ/. registrar is at rank #5,787, tagged as averb, pronounced /xe.ʒis.ˈtɾax/ ou /xe.ʒiʃ.ˈtɾax/.
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 34907, this pair ranks #32,243 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Register vs registrar
Shared letters: egirst. Private to "Register": -. Private to "registrar": a.
"Register" · 8 letters · shape CVCVCCVC · "registrar" · 9 letters · shape CVCVCCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "Register" for "registrar" ever safe?
Frequency check: "Register" vs "registrar" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "Register" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "registrar" - compare definitions side by side with the headword page. Word entry
- This pair ranks #32,243 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "Register" and "registrar" also get mixed up with nearby pairs, the highest-scored neighbour is "Register vs revistar". 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 #32,243 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.