πεζῇpezēi

foot-wise, i.e. by walking

Greek (New Testament) · G3979

Meanings

1. on foot: Matthew 14:13.

2. Opp. to going by sea, by land: Matthew 14:13.

3. As adverb, πεζῇ (namely ὁδῷ), on foot or by land: Matthew 14:13, Mark 6:33.

Same root

πούςpoús · G4228a "foot" (figuratively or literally)
πεζεύωpezeúō · G3978to foot a journey, i.e. travel by land
τράπεζαtrápeza · G5132a table or stool (as being four-legged), usually for food (figuratively, a meal); also a counter for money (figuratively, a broker's office for loans at interest)

Where it appears

Appears 2 times in the Bible.

Matthew 14:13 As soon as Jesus heard the news, he left in a boat to a remote area to be alone. But the crowds heard where he was headed and followed on foot from many towns.
Mark 6:33 But many people recognized them and saw them leaving, and people from many towns ran ahead along the shore and got there ahead of them.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.