O

symbol

By · According to Wiktionary data (CC BY-SA) ·

The verdict

“O” is in the everyday core of French, ranked #807 in French word frequency and used as a symbol.

#807
frequency rank, French
1
letter
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - En logique, symbole de la proposition particulière négative.

Visual similarity to commonly confused words

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

O vs on
0% similar
O vs ou
0% similar
O vs or
0% similar

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

Key facts for O
PropertyValue
HeadwordO
LanguageFrench
Part of speechSymbol
Letters1
Frequency rank#807
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “O” sits in French frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). O lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The French entry for O is 1 letters long, classified as a symbol. Corpus data places it at rank #807 in overall French word frequency, putting it firmly in the everyday core of the language. The dominant gloss from Wiktionary reads: "En logique, symbole de la proposition particulière négative.".

The misspelling generator found no plausible variants for O, suggesting the orthography follows predictable French patterns. It also participates in 20 confusable-pair relationships, "on", "ou", "or", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Our source data has no etymology on file for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct French form is O, spelled O.

Definition

  1. 1
    En logique, symbole de la proposition particulière négative.

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 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "O"?
"O" is spelled O.
What does "O" mean?
As a symbol, "O" means: En logique, symbole de la proposition particulière négative.
What words are commonly confused with "O"?
"O" is commonly confused with "on", "ou", "or". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "O" come from?
"O" is a French word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

Using “O”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct French spelling is O - every other letter order is a misspelling in standard orthography.
  • Don't mix it up with “on” - see the side-by-side comparison. O vs on
  • Browse more French words and confusable pairs in the same reference. French words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list