manngi

From maðr +‎ -gi.

manngi (genitive mannskis)

1. no man
   • ...á þeim meiði er manngi veit...

     ...from that gallows-tree that no one knows...

     (Hávamál 138)

• Zoëga, Geir T. (1910) “manngi”, in A Concise Dictionary of Old Icelandic, Oxford: Clarendon Press; also available at the Internet Archive