| known | (adjective) apprehended with certainty | - |
|---|
| renown | (noun) the state or quality of being widely honored and acclaimed | Synonyms: celebrity, fame |
|---|
| unbeknown | (adjective) (usually used with `to') occurring or existing without the knowledge of | Synonyms: unbeknownst |
|---|
| (adverb) without someone's knowledge | Synonyms: unbeknownst |
| unknown | (adjective) not known | - |
|---|
| (adjective) being or having an unknown or unnamed source | Synonyms: nameless, unidentified, unnamed |
| (adjective) not famous or acclaimed | Synonyms: obscure, unsung |
| (adjective) not known before | Synonyms: strange |
| (adjective) not known to exist | - |
| (noun) a variable whose values are solutions of an equation | Synonyms: unknown quantity |
| (noun) an unknown and unexplored region | Synonyms: terra incognita, unknown region |
| (noun) anyone who does not belong in the environment in which they are found | Synonyms: alien, stranger |