regularvsrotularTell them apart

Which to use

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

#3,285
“regular” frequency rank
#34,452
“rotular” frequency rank
37737
confusion score

Side-by-Side Comparison

Feature regular rotular
Definition que ocorre em intervalos igualmente espaçados de tempo ou espaço relativo à rótula (osso)

Where the eye mixes regular and rotular

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

7 ch
regular
7 ch
rotular

Visual trap between regular and rotular

A purely visual mix-up. regular (/Rɨ.ɡu.ˈlaɾ/) and rotular (/Ru.tu.ˈlaɾ/) 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 37737, derived from the frequency rank of both members and their visual similarity.

regular is recorded at frequency rank #3,285, classified as anadj, pronounced /Rɨ.ɡu.ˈlaɾ/. rotular is at rank #34,452, tagged as anadj, pronounced /Ru.tu.ˈlaɾ/.

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 37737, this pair ranks #28,830 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of regular vs rotular

Shared letters: alru. Private to "regular": eg. Private to "rotular": ot.

"regular" · 7 letters · shape CVCVCVC  ·  "rotular" · 7 letters · shape CVCVCVC

Known mistypes of this pair

  • regularergular · reggular · regluar · regualr · regularr · regullar · regulra · reuglar
  • rotularortular · rotluar · rottular · rotualr · rotularr · rotullar · rotulra · routlar

Frequently Asked Questions

Is swapping "regular" for "rotular" ever safe?
No. They are said differently (/Rɨ.ɡu.ˈlaɾ/ versus /Ru.tu.ˈlaɾ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "regular" vs "rotular" - which ranks higher?
"regular" is the more common of the two: it sits at frequency rank #3,285 in our Portuguese list, against #34,452 for "rotular". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "regular" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "rotular" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #28,830 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "regular" and "rotular" also get mixed up with nearby pairs, the highest-scored neighbour is "rotular vs rótulo". 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 #28,830 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