gratify (v.)youdaoicibaDictYouDict[gratify 词源字典]
c. 1400, "to bestow grace upon;" 1530s, "to show gratitude to," from Latin gratificari "to do favor to, oblige, gratify," from gratus "pleasing" (see grace (n.)) + root of facere "to make, do, perform" (see factitious). Meaning "to give pleasure to" is from 1560s. Related: Gratified; gratifying.[gratify etymology, gratify origin, 英语词源]