Cryptic
Unknown
Unknown adjective - Happening or existing without one's knowledge.
Cryptic and unknown are semantically related. Sometimes you can use "Cryptic" instead an adjective "Unknown".
Nearby Words: unknowable, unknowing
Mutual synonyms
Both words in one sentence
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Cryptic Background Reference: Blacknail's and pretty much any other's backstory is pretty much unknown and will most likely only be referenced faintly.
Source: Literature / The Iron Teeth -
They are enigmatic characters of unknown origins, who attract much attention from others due to their cryptic personalities and lack of concrete backstories.
Source: Mysterious Waif -
The Way of Kings (first book of The Stormlight Archive): King Gavilar gives his assassin a dark-glowing sphere of unknown origin and nature, to keep away from "them", and a cryptic message for his brother.
Source: Last Request
Cite this Source
Unknown and Cryptic. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/cryptic/unknown
Cryptic & Unknown. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/cryptic/unknown>.
Unknown or Cryptic. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/cryptic/unknown.
Google Ngram Viewer shows how "cryptic" and "unknown" have occurred on timeline