innocence (n.)youdaoicibaDictYouDict[innocence 词源字典]
mid-14c., "freedom from guilt," from Old French inocence "innocence, purity, chastity" (12c.), from Latin innocentia, from innocens "harmless, blameless" (see innocent). Meaning "lacking in guile or artifice" is from late 14c.[innocence etymology, innocence origin, 英语词源]