- gratuity (n.)
[gratuity 词源字典]
- 1520s, "graciousness," from French gratuité (14c.) or directly from Medieval Latin gratuitatem (nominative gratuitas) "free gift," probably from Latin gratuitus "free, freely given" (see gratuitous). Meaning "money given for favor or services" is first attested 1530s.[gratuity etymology, gratuity origin, 英语词源]