Word.ws English Dictionary

once

/wʌn(t)s/UK/wʌn(t)s/

once adverb: one and only one time. Also the obsolete form of ounce.

Adverb

once (not comparable)

  1. (frequency) One and only one time.
    • I have only once eaten pizza.
    Synonyms:
    one time
  2. Formerly; during some period in the past.
    • He was once the most handsome man around.
    • I once had a motorbicycle.
    Synonyms:
    formerly
  3. (obsolete) At any time; ever.
    • If the facts once became known, we'd be in trouble.
    • Once bring in the police and what is inevitably bound to follow? There will be calls and interrogations and cross-questionings […]1934, Ernest Bramah, The Bravo of London
  4. (obsolete) One day, someday.
    • The wisdom of God thought fit to acquaint David with that court which we shall once govern.1612–1634, [Joseph Hall], “(please specify the page)”, in [Contemplations vpon the Principall Passages of the Holy Storie], volume (please specify |volume=I to VIII), London, →OCLC
  5. Multiplied by one: indicating that a number is multiplied by one.
    • Once three is three.

Conjunction

once

  1. As soon as; when; after.
    • Near-synonym: immediately
    • We'll get a move on once we find the damn car keys!
    Synonyms:
    immediately

Noun capitalized: Once

Once (plural Onces)

  1. (slang) A fan of the Korean girl band Twice.

Also used as

once is also the obsolete form of ounce.

once meaning in Hindi, Urdu, Sanskrit and Pashto

once in Hindi

one and only one time
एक बार ek bār

once in Urdu

one and only one time
ایک دَفْعَہ ek daf'a

once in Sanskrit

one and only one time
सकृत् sakṛt
formerly
सकृत् sakṛt

once in Pashto

one and only one time
یوه پلا
More languagesFewer languages
once in Arabic
مَرَّةً marratan, مَرَّةً وَاحِدَةً marratan wāḥidatan, بِمُجَرَّد أَنّ bimujarrad ʔann
once in Malay
sekali, dahulu, sebaik sahaja
once in Persian
یکبار yek-bâr
once in Vietnamese
một lần, từng, đã từng, một khi

Examples of once in a sentence

  • Once I didn't drive a big car, but now I own an all-terrain 4WD.
  • Wang notes that flowers have rooted and grow in the area once covered with ice.
  • Once you have obtained the elven bow, return to the troll bridge and trade it for the sleeping potion.
  • Once he is married, he will be able to claim the inheritance.
  • Once he'd spied out my weaknesses, he'd know how to apply pressure.
  • Orion hit a rabbit once; but though sore wounded it got to the bury, and, struggling in, the arrow caught the side of the hole and was drawn out.1879, R[ichard] J[efferies], chapter II, in The Amateur Poacher, London: Smith, Elder, & Co., […], →OCLC:

All 40 example sentences with once

Synonyms of once

Antonyms

All synonyms and antonyms of once

Forms of once

pluralonces
pluralOnces

Origin of once

From Middle English ones, from Old English ānes, a remodelling (after ān (“one”)) of ǣnes, itself an extension of ǣne (“once”) with the genitive suffix -es. Equivalent to one + -s. Cognate with Saterland Frisian enst, insen (“once”), West Frisian iens (“once”), Dutch eens (“once”), German Low German eens, ins (“once”), German einst (“once”). More at one (including regarding the development of the pronunciation) and -s.

Words formed from once

Phrases with once

19 more phrasesFewer phrases

Words that rhyme with once

Questions about once

What does once mean?
Once means one and only one time.
What is once in Hindi?
Once in Hindi is एक बार (ek bār). See Once meaning in Hindi.
How do you use once in a sentence?
Once I didn't drive a big car, but now I own an all-terrain 4WD.
What part of speech is once?
Once can be an adverb, a conjunction or a noun.
How do you pronounce once?
Once is pronounced /wʌn(t)s/.

Words near once in the dictionary

  1. onc
  2. ONCA
  3. oncaeid
  4. oncaeids
  5. oncame
  6. once
  7. once a man, twice a boy
  8. once a man, twice a child
  9. once a thief, always a thief
  10. once a woman, twice a child
  11. once again

Source and license

Adapted from Wiktionary: once (page history and authors); Once (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-once.ogg.

Cite this entry: “once.” Word.ws, https://word.ws/once. Based on Wiktionary, CC BY-SA 4.0.