unknown

nounfeminineformal/ĩ.kɔ.ˈɡni.tɐ/low

in·cog·ni·ta

Definition

Something that is unknown or unidentified; a quantity or factor whose value is not yet determined.

The author of the manuscript is an unknown.

X is the unknown in this algebraic equation.

syn

Common collocations

mathematical unknownto remain unknown

Do latim 'incognitus', 'a, um' (desconhecido).