Advanced
Unknown
Unknown adjective - Happening or existing without one's knowledge.
Advanced and unknown are semantically related. Sometimes you can use "Advanced" instead an adjective "Unknown".
Nearby Words: unknowable, unknowing
Both words in one sentence
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The SGC dialing computer in Stargate SG-1 is remarkably flashy for something supposedly 'MacGyvered' together by military scientists and technicians to interface with advanced and unknown technology.
Source: Viewer-Friendly Interface -
Ancient Astronauts: Celestia reveals humans were like these, though how technologically advanced they were is still unknown.
Source: Fanfic / Anthropology - Precursors: An unknown ancient civilization left a lot of highly advanced technology in the Highlands of Afon.
Cite this Source
Unknown and Advanced. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/advanced/unknown
Advanced & Unknown. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/advanced/unknown>.
Unknown or Advanced. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/advanced/unknown.
Google Ngram Viewer shows how "advanced" and "unknown" have occurred on timeline