"chest for keeping valuables," c.1430, save, from M.Fr. en sauf "in safety," from sauf (see safe (adj.)). Spelling with -f- first recorded 1688, from infl. of safe (adj.).
late 13c., "uninjured, unharmed," from O.Fr. sauf, from L. salvus "uninjured, healthy, safe," related to salus "good health," saluber "healthful," all from PIE *solwos from base *sol- "whole" (cf. L. solidus "solid," Skt. sarvah "uninjured, intact, whole," Avestan haurva- "uninjured, intact," O.Pers. haruva-, Gk. holos "whole"). Meaning "not exposed to danger" is attested from late 14c.; of actions, etc., "free from risk," first recorded 1580s. Safe-conduct (late 13c.) is from O.Fr. sauf-conduit (13c.).