Once
Once adverb - At an earlier or previous time.
Twice
Both words in one sentence
- This was lampshaded once or twice by other cars beeping at him at stoplights and characters noticing every once in a while and staring at him.
Source: Flashback / Live-Action TV - He still dies occasionally (usually about once or twice per season), and the trope got a Cerebus Retcon during the "Coon and Friends" three-parter, but it's no longer used as a Once per Episode gag.
Source: Outgrow The Trope - The Sacred Ash in Pokémon is extremely rare, found only once or twice per game, but it fully revives all of your Pokémon at once—essentially a portable Pokémon Center.
Source: Emergency Energy Tank
Cite this Source
Twice and Once. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/once/twice
Once & Twice. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/once/twice>.
Twice or Once. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/once/twice.
Google Ngram Viewer shows how "once" and "twice" have occurred on timeline