once

[ˈõnse]

/[ˈõnse]/ num

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

The verdict

“once” has 6 generated spelling variants in the Spanish index at frequency #3,347. The variants make it a useful spelling check.

#3,347
frequency rank, Spanish
1,467
“O” headwords
6
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Diez y uno.

Corpus desk

Index ES-once · once · Spanish

once · rank #3,347 · 6 variants · 20 confusables

  • FREQ-COMMON #3,347
  • LEN-MID 4 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-MID 6 variants
  • BOOK-MID 1,467
  • PHOTO-FINISH observar

Nearest frequency peer: observar (-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.

Pares de rango junto al imán ortográfico “once”

Misma franja de rareza: útil si un typo cae en un lema vecino

corpus weight

What this shows “once” está entre estos pares FrequencyWords; la profundidad de typo se mide aparte en el gráfico de distancia de edición.

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).

once vs oye
50% similar
once vs one
75% similar
once vs ONU
0% similar

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

Key facts for once
PropertyValue
Headwordonce
LanguageSpanish
Part of speechNumeral
IPA[ˈõnse]
Letters4
Frequency rank#3,347
Misspellings tracked6
Confusable pairs20
SourceWiktionary (kaikki.org)

Frecuencia del imán ortográfico “once”

De izquierda a derecha: las pocas palabras que cargan el habla diaria, luego la cola larga casi invisible.oncecae aquí:

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

Los ticks avanzan en logaritmo; cada uno es del orden de diez veces más raro. En la misma franja de rareza aparecen “observar” (#3,346), “originales” (#3,348), “obligación” (#3,345). Entre 1,467 lemas con “O”, “once” va en #3,347. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 6 spelling variants around once (IPA [ˈõnse]), anumeral. Corpus frequency is #3,347 among 1,467 “O” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 6 likely wrong-spelling variants for once, with forms such as "noce", "ocne", and "oncce". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 20 confusable-pair relationships, "oye", "one", "ONU", 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 Spanish form is once, spelled O-N-C-E.

Definition

  1. 1
    Diez y uno.
  2. 2
    Que ocupa el undécimo lugar en una serie.
  3. 3
    Que está once veces. Se usa delante de un sustantivo, pero también puede ir solo.

Recorded use

Wiktionary examples

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

  1. El capítulo once.
  2. Me leí los once capítulos.

Synonyms

undécimo

This word in other languages

eleven(English)onze(Français)elf(Deutsch)onze(Português)

Common misspellings

Also misspelled as:

  • noce
  • ocne
  • oncce
  • onec
  • onnce
  • onse

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of once - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

noce2ocne2oncce1onec2onnce1onse1
Edit distance from "once"

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 "once"?
"once" is spelled O-N-C-E. The IPA pronunciation is [ˈõnse].
What does "once" mean?
As a numeral, "once" means: Diez y uno.
What words are commonly confused with "once"?
"once" is commonly confused with "oye", "one", "ONU". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "once"?
The IPA (International Phonetic Alphabet) transcription for "once" is [ˈõnse]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "once" come from?
"once" is a Spanish 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.

Similar Spanish words by spelling shape

Same letter count and similar misspelling depth for "once", not the corpus desk frequency band.

Same letter count

Frequency-ranked Spanish headwords with 4 letters (nearest by frequency rank).

nave#3,342sera#3,364caza#3,386caro#3,306

Similar misspelling depth

Headwords with a similar count of attested misspellings (6 here; floor ≥5).

patio6 variantsnace6 variantslink6 variantscierra6 variants

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

Source: FrequencyWords open word-frequency list