quodlibet (n.)youdaoicibaDictYouDict[quodlibet 词源字典]
"a nicety, subtlety," late 14c., Latin, literally "what you will, what you please," from quod "what," neuter of qui (see who) + libet "it pleases" (see love (n.)).[quodlibet etymology, quodlibet origin, 英语词源]