Strong's G3979 — πεζῇ (adverb)
peze (ped-zay`) adv.
1. foot-wise, i.e. by walking
[dative case feminine of a derivative of G4228 (as adverb)]
KJV: a- (on) foot 
Root(s): G4228 
Hebrew root: πούς
Occurrences: 2