Constantly and Once

Opposite meaning words

sentence examples

Constantly

Constantly adverb - Many times.
Usage example: a crackpot who constantly wrote angry letters to the local newspaper
Show all Definitions
Synonyms for Constantly
Antonyms for Constantly
Once is an antonym for constantly.
Nearby Words: constant, consistent, constancy, Constance

Once

Once adverb - At an earlier or previous time.
Show all Definitions
Synonyms for Once
Antonyms for Once
Constantly is an antonym for once.
Similar words of constantly

Similar words of once

Both words in one sentence

  • No Pronunciation Guide: Purcell once wrote that fans were constantly mispronouncing the heroine's name as "Daisy Ann" or similar.
    Source: Webcomic / Dasien
  • Similarly, Brennan finds herself constantly reminded that she once shot an unarmed man (it's okay, though: he was trying to set her on fire).
    Source: Never Live It Down / Live-Action TV
  • Journey to Chaos: Elves stop aging once they are fully grown because their Seed of Chaos rejuvenates them constantly.
    Source: Immortality Begins at 20
More sentences
Cite this Source
Once and Constantly. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/constantly/once
Constantly & Once. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/constantly/once>.
Once or Constantly. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/constantly/once.

Antonyms for constantly


Antonyms for once

Google Ngram Viewer shows how "constantly" and "once" have occurred on timeline