Word.ws English Dictionary

Synonyms of once

6 similar words · 4 opposite words

Another word for once is formerly. Other synonyms of once are one time, immediately, oncet, yance and wunst. The opposite of once is often.

Synonyms and similar words for once

adverbOne and only one time.

  • one timeUsed to introduce a narrative concerning a past event.

adverbFormerly; during some period in the past.

conjunctionAs soon as; when; after.

adverbMore synonyms

  • oncet US, dialectalOnce.
  • yance UK, dialectalOnce (in both senses: only one time, and formerly).
  • wunst obsolete

Opposite of once

adverbMore antonyms

  • four times
  • oftenFrequently; many times on different occasions.
  • thriceThree times.
  • twice

Meaning of once

  1. adverb One and only one time.
  2. adverb Formerly; during some period in the past.
  3. adverb At any time; ever.

Full definition of once

once in other languages

Questions about synonyms of once

What is another word for once?
Once has 6 synonyms on Word.ws, such as formerly, one time, immediately, oncet, yance and wunst.
What is the opposite of once?
The opposite of once is often. Other antonyms of once are thrice.
What does once mean?
Once means one and only one time.

Source and license

Adapted from Wiktionary: once (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

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