concierge

Origin

Borrowed from French concierge (“caretaker; doorkeeper; lodge-keeper of a château”), from Old French conciarge, consierge, consirge, from Medieval Latin consergius; further etymology uncertain, probably from Vulgar Latin *cōnservius, from Latin cōnservus (“fellow servant; fellow slave”), from con- (prefix denoting a being or bringing together of several objects) (ultimately from Proto-Indo-European *ḱóm (“beside, by; near; with”)) + servus (“servant; slave”) (possibly ultimately from Proto-Indo-European *ser- (“to guard; to take care of”) + *-wós (suffix forming adjectives from verb stems)).