Unknown and Zippo
Related words
Unknown
Unknown noun - An unknown and unexplored region.
Zippo and unknown are semantically related. In some cases you can use "Zippo" instead a noun "Unknown".
Nearby Words: unknowable, unknowing
Zippo
Cite this Source
Zippo and Unknown. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/unknown/zippo
Unknown & Zippo. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/unknown/zippo>.
Zippo or Unknown. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/unknown/zippo.
Google Ngram Viewer shows how "unknown" and "zippo" have occurred on timeline