Middle English word hire-man comes from Old English mann, Old English hyr (Hire, wages. Interest, usury.), Old English hȳr

Detailed word origin of hire-man

Dictionary entry	Language	Definition
mann	Old English (ang)	Man (adult male). Person, human. The rune ᛗ, representing the sound /m/.
hyr	Old English (ang)	Hire, wages. Interest, usury.
hȳr	Old English (ang)
hyrmann	Old English (ang)	Mercenary. One who works for hire; hireling.
hȳrmann	Old English (ang)
hire-man	Middle English (enm)

Words with the same origin as hire-man