Etymograph > Indo-European > Proto-West Germanic > Dictionary > *niuhsijan

to spy

originates from: PGmc *niuhsijaną "spy" (pwgmc-final-a) through pgmc-to-pwgmc
Words originating from this one
OE nēosan "search out" (niuhsijan > niuhsjan > niusjan > nīosjan > nīesjan > nīesan) through pwgmc-to-oe
(source: Ringe 2014:157)