Which to use
“perímetro” is a noun and “primeiro” is an adjective - they look or sound alike but fill different roles in a sentence.
- #8,937
- “perímetro” frequency rank
- #142
- “primeiro” frequency rank
- 9079
- confusion score
Side-by-Side Comparison
| Feature | perímetro | primeiro |
|---|---|---|
| Definition | soma dos comprimentos de todos os lados de um polígono | refere-se àquele que ocupa a posição inicial em uma série; o mais antigo; o que vem antes |
Where the spellings diverge
Shared letters are muted; the letters that actually set perímetro and primeiro apart are highlighted. They share 6 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: perímetro is anoun and primeiroanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 9079, derived from the frequency rank of both members and their visual similarity.
perímetro is recorded at frequency rank #8,937, classified as anoun. primeiro is at rank #142, tagged as anadj, pronounced [pɾi.ˈmej.ɾʊ].
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 9079, this pair ranks #64,476 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of perímetro vs primeiro
Shared letters: emopr. Private to "perímetro": tí. Private to "primeiro": i.
"perímetro" · 9 letters · shape CVCVCVCCV · "primeiro" · 8 letters · shape CCVCVVCV
Known mistypes of this pair
- primeiro ← pirmeiro · pprimeiro · priemiro · primeior · primeirro · primerio · primiero · primmeiro
Frequency comparison
Frequently Asked Questions
Can "perímetro" and "primeiro" be used interchangeably?
Which is more common, "perímetro" or "primeiro"?
Remembering perímetro vs primeiro
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “perímetro”; for an adjective, it's “primeiro”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “perímetro” entry
- Browse more pairs most likely to be confused. Most confusable