Frequently
Frequently adverb - Many times.
Usage example: our oddball uncle frequently lets himself into our house without knocking
Once is an antonym for frequently.
Once
Both words in one sentence
- They frequently sacrifice men to Artemis once they've drugged them with the wine.
- From 28 Days Later, "In the House, In a Heartbeat," which is used once in the climax of the movie, is frequently treated as the movie's theme.
Source: Bootstrapped Theme - Comically Missing the Point: Aside from Hope doing this quite frequently, Sara does it once, when getting lectured by Kayla.
Source: Webcomic / Alone in a Crowd
Cite this Source
Once and Frequently. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/frequently/once
Frequently & Once. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/frequently/once>.
Once or Frequently. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/frequently/once.
Google Ngram Viewer shows how "frequently" and "once" have occurred on timeline