word-forming element meaning "state or condition of being," from Old English -had "condition, quality, position" (as in cildhad "childhood," preosthad "priesthood," werhad "manhood"), cognate with German -heit/-keit, Dutch -heid, Old Frisian and Old Saxon -hed, all from Proto-Germanic *haidus "manner, quality," literally "bright appearance," from PIE (s)kai- (1) "bright, shining" (Cognates: Sanskrit ketu "brightness, appearance"). Originally a free-standing word (see hade); in Modern English it survives only in this suffix.
"virginity (of a woman), condition of a maiden," c. 1200, from maiden (n.) + Middle English -hede (see -head). Compare Middle English maidehede "celibacy, virginity" (of men or women), literally "maid-hood," from Old English mæðhad.
c. 1200, "divine nature, deity, divinity," from god + Middle English -hede (see -head). Along with maidenhead, the sole survival of this form of the suffix. Old English had godhad "divine nature." Parallel form godhood is from early 13c., now chiefly restricted to "state or condition of being a god."
<a href="https://www.etymonline.com/word/-head">Etymology of -head by etymonline</a>
Harper, D. (n.d.). Etymology of -head. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/-head