gratification (n.)youdaoicibaDictYouDict[gratification 词源字典]
1590s, "act of gratifying," from Middle French gratification or directly from Latin gratificationem (nominative gratificatio) "obligingness, complaisance," noun of action from past participle stem of gratificari "to please, oblige, do favor to" (see gratify). Meaning "state of being gratified" is by 1712.[gratification etymology, gratification origin, 英语词源]