on

Name: on, Portuguese Word Data
Creator: Wiktionary
License: https://creativecommons.org/licenses/by-sa/4.0/

adj

By PlainSpell · According to Wiktionary data (CC BY-SA) · analyzed September 3, 2026

The verdict

“on” sits in 20 confusable pairs (corpus #675) as an adjective. The look-alike neighbours are the real trap.

#675
frequency rank, Portuguese: 385
“O” headwords: 20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - ligado, ativo (na internet)

Corpus desk

Index PT-on · on · Portuguese

on · rank #675 · 0 variants · 20 confusables

FREQ-CORE #675
LEN-SHORT 2 letters
VOW-1 1 vowel
CONFUS-HIGH 20 pairs
VAR-0 0 variants
BOOK-MID 385
PHOTO-FINISH sentido

Nearest frequency peer: sentido (+2 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.

houve

99,329
on

99,326
sentido

99,324
sexo

99,323
tecnologia

99,322
texto

99,321

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

Visual similarity to commonly confused words

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

on vs os

50% similar

on vs ou

50% similar

on vs or

50% similar

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

Key facts for on
Property	Value
Headword	on
Language	Portuguese
Part of speech	Adjective
Letters	2
Frequency rank	#675
Misspellings tracked	0
Confusable pairs	20
Source	Wiktionary (kaikki.org)

Rank de corpus junto a confusáveis de “on”

Esta escala corre do núcleo do português quotidiano (esquerda) até o rastro de formas raras (direita).oncai aqui:

#675

#1#100#1K#10K#100K

← used constantlyrarely used →

O eixo é logarítmico: cada tick marca cerca de dez vezes menos frequência. Na mesma faixa de raridade aparecem “sentido” (#677), “houve” (#672), “sexo” (#678). Entre 385 lemas com “O”, “on” fica em #675. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for on is neighbouring look-alikes ("os", "ou", …), not just typos; it is anadjective. Frequency #675 among 385 “O” headwords. Gloss: "ligado, ativo (na internet)".

The misspelling generator found no plausible variants for on, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "os", "ou", "or", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

No documented word history exists for this headword, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct Portuguese form is on, spelled O-N.

Definition

1
ligado, ativo (na internet)

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 "on"?

"on" is spelled O-N.

What does "on" mean?

As an adjective, "on" means: ligado, ativo (na internet)

What words are commonly confused with "on"?

"on" is commonly confused with "os", "ou", "or". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.

What language does "on" come from?

"on" is a Portuguese word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.

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.