being or having an unknown or unnamed source; "a poem by an unknown author"; "corporations responsible to nameless owners"; "an unnamed donor"知られてない、または無名の情報源のまたはそれらの特質がある無名の
例:a poem by an unknown author 無名の作者による詩
not known before; "used many strange words"; "saw many strange faces in the crowd"; "don't let anyone unknown into the house"前に知られていない知らない
例:don't let anyone unknown into the house 知らない人は誰も家に入れないで下さい