o

symbol

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

The verdict

“o” is in the everyday core of Spanish, ranked #28 in Spanish word frequency and used as a symbol.

#28
frequency rank, Spanish
1
letter
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - En la escuela de lógica escolástica, símbolo utilizado para representar una afirmación particular negativa.

Visual similarity to commonly confused words

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

o vs os
50% similar
o vs of
50% similar
o vs ok
50% similar

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

Key facts for o
PropertyValue
Headwordo
LanguageSpanish
Part of speechSymbol
Letters1
Frequency rank#28
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “o” sits in Spanish 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 Spanish entry for o is 1 letters long, classified as a symbol. Corpus data places it at rank #28 in overall Spanish word frequency, putting it firmly in the everyday core of the language. The dominant gloss from Wiktionary reads: "En la escuela de lógica escolástica, símbolo utilizado para representar una afirmación particular negativa.".

o doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "os", "of", "ok", and more, where similar look or sound leads writers to substitute one word for another in context.

Wiktionary doesn't record an etymology for this headword, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct Spanish form is o, spelled O.

Definition

  1. 1
    En la escuela de lógica escolástica, símbolo utilizado para representar una afirmación particular negativa.

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 Spanish 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 la escuela de lógica escolástica, símbolo utilizado para representar una afirmación particular negativa.
What words are commonly confused with "o"?
"o" is commonly confused with "os", "of", "ok". 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 Spanish 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 Spanish spelling is O - every other letter order is a misspelling in standard orthography.
  • Don't mix it up with “os” - see the side-by-side comparison. o vs os
  • Browse more Spanish words and confusable pairs in the same reference. Spanish 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