1837, "body of persons engaged in any service," from French personnel (originally military, a contrastive term to matériel), noun use of personnel (adj.) "personal," from Old French personel (see personal).
1540s, "management of domestic concerns," perhaps a back-formation from housekeeper.
late 14c., curacioun, "curing of disease, restoration to health," from Old French curacion "treatment of illness," from Latin curationem (nominative curatio), "a taking care, attention, management," especially "medical attention," noun of action from past-participle stem of curare "to cure" (see cure (v.)). From 1769 as "management, guardianship."
1590s, "pertaining to management of a household," perhaps shortened from economical, or else from French économique or directly from Latin oeconomicus "of domestic economy," from Greek oikonomikos "practiced in the management of a household or family" (also the name of a treatise by Xenophon on the duties of domestic life), hence, "frugal, thrifty," from oikonomia "household management" (see economy (n.)). Meaning "relating to the science of economics" is from 1835 and now is the main sense, economical retaining the older one of "characterized by thrift."