Английский Этимологический словарь - safe (adj.)

- c.1280, from O.Fr. sauf, from L. salvus "uninjured, healthy, safe," related to salus "good health," saluber "healthful," and solidus "solid," all from PIE base *solwos "whole." The noun "chest for keeping valuables" is c.1430, from M.Fr. en sauf "in safety." Originally save, spelling with -f- first recorded 1688. Safety-pin is from 1857; safety-valve is from 1797.