sycophancy (n.)youdaoicibaDictYouDict[sycophancy 词源字典]
1620s, from sycophant + -cy, or else from Latin sycophantia, from Greek sykophantia "false accusation, slander; conduct of a sycophant," from sykophantes.[sycophancy etymology, sycophancy origin, 英语词源]