oi

intj

The verdict

“oi” sits in 20 confusable pairs (corpus #631) as an interjection. The look-alike neighbours are the real trap.

#631
frequency rank, Portuguese
385
“O” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - expressa cumprimento que se faz ao encontrar uma pessoa

Corpus desk

Index PT-oi · oi · Portuguese

oi · rank #631 · 0 variants · 20 confusables

  • FREQ-CORE #631
  • LEN-SHORT 2 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 385
  • PHOTO-FINISH jeito

Nearest frequency peer: jeito (-1 rank slots)

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Vizinhos de frequência do confusável “oi”

Pares de peso semelhante no corpus, aparte dos confusáveis abaixo

corpus weight

What this shows As barras situam “oi” face aos lemas portugueses mais próximos por rank, não um reprint da secretária de confusáveis.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

oi vs os
50% similar
oi vs ou
50% similar
oi vs on
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for oi
PropertyValue
Headwordoi
LanguagePortuguese
Part of speechInterjection
Letters2
Frequency rank#631
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Rank de corpus junto a confusáveis de “oi”

A frequência vai do punhado de palavras do dia a dia (esquerda) à cauda longa quase nunca usada (direita).oicai aqui:

#1#100#1K#10K#100K
← used constantlyrarely used →

Os ticks avançam em logaritmo; cada um é da ordem de dez vezes mais raro. Na mesma faixa de raridade aparecem “jeito” (#630), “controle” (#627), “resultado” (#635). Entre 385 lemas com “O”, “oi” fica em #631. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for oi is neighbouring look-alikes ("os", "ou", …), not just typos; it is aninterjection. Frequency #631 among 385 “O” headwords. 6 recorded senses keep meaning in play.

oi has no tracked misspelling variants, suggesting the orthography follows predictable Portuguese patterns. It also participates in 20 confusable-pair relationships, "os", "ou", "on", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

This entry carries no recorded etymology, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Portuguese form is oi, spelled O-I.

Definition

  1. 1
    expressa cumprimento que se faz ao encontrar uma pessoa
  2. 2
    expressa resposta que se dá quando se é chamado indicando que se está presente a prestar atenção
  3. 3
    expressa chamamento à atenção de alguém em específico
  4. 4
    expressa chamamento à atenção em situações em que não se sabe da presença ou não de alguém no recinto ou local
  5. 5
    expressa estado de pasmo ante uma implausibilidade enorme ocorrida ou algo confusamente difícil de crer como factualidade
  6. 6
    expressa incompreensão a algo dito e demonstra que se quer que seja repetido ou feito se entender o que se pretendia comunicar

Recorded use

Wiktionary examples

These source excerpts show how oi appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Oi, Maria, tudo bem?
  2. A: — Oi, quero que preste atenção em mim agora.

Synonyms

This word in other languages

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 "oi"?
"oi" is spelled O-I.
What does "oi" mean?
As an interjection, "oi" means: expressa cumprimento que se faz ao encontrar uma pessoa
What words are commonly confused with "oi"?
"oi" is commonly confused with "os", "ou", "on". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "oi" come from?
"oi" is a Portuguese word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list