Once
Perpetually
Perpetually adverb - For all time.
Usage example: a group of jaded teenagers with their perpetually bored expressions
Once is an antonym for perpetually.
Both words in one sentence
-
Ryuko once even referred to her as a "perpetually frowning, caterpillar-eyebrow bitch."
Source: Perpetual Frowner -
Chou, he of perpetually vertical Anime Hair, once claimed that he was so mad his hair stood on end.
Source: Expressive Hair -
Bud and Brandi of Wapsi Square once wore this sort of outfit during their perpetually drunk phase.
Source: Playboy Bunny
Cite this Source
Perpetually and Once. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/once/perpetually
Once & Perpetually. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/once/perpetually>.
Perpetually or Once. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/once/perpetually.
Google Ngram Viewer shows how "once" and "perpetually" have occurred on timeline