O.E.
uncuð "unknown, uncertain, unfamiliar," from
un- (1) "not" +
cuð "known, well-known," pp. of
cunnan "to know" (see
can (v.)). Meaning "strange, crude, clumsy" is first recorded 1513. The compound (and the thing it describes) widespread in IE languages, cf. L.
ignorantem,, O.N.
ukuðr, Goth.
unkunþs, Skt.
ajnatah, Armenian
ancanaut', Gk.
agnotos, O.Ir.
ingnad "unknown."