Once
Once adjective - Having been such at some previous time.
Primeval
Primeval adjective - Relating to or occurring near the beginning of a process, series, or time period.
Mutual synonyms
Both words in one sentence
- Primeval can get like this when multiple time anomalies are open to different time periods at once.
Source: Mind Screw / Live-Action TV - Where they once ruled the entire galaxy unopposed and rearranged the cosmos at a whim, now they're reduced to a few spaceborne cities called Craftworlds, some primeval colonies on the galactic rim, and in the Dark Eldar's case a nightmare metropolis in the cancerous heart of a Portal Network.
Source: Vestigial Empire
Cite this Source
Primeval and Once. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/once/primeval
Once & Primeval. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/once/primeval>.
Primeval or Once. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/once/primeval.
Google Ngram Viewer shows how "once" and "primeval" have occurred on timeline