leisureyoudaoicibaDictYouDict[leisure 词源字典]
leisure: [14] The etymological idea underlying leisure is that of ‘having permission’, and hence of ‘having the freedom to do as one likes’. The word came via Anglo-Norman leisour from Old French leisir. This was a noun use of a verb that meant ‘be permitted’, and came from Latin licēre ‘be permitted’ (source of English illicit [17] and licence [14]).
=> illicit, licence[leisure etymology, leisure origin, 英语词源]
leisure (n.)youdaoicibaDictYouDict
early 14c., leisir, "opportunity to do something" (as in phrase at (one's) leisure), also "time at one's disposal," from Old French leisir (Modern French loisir) "capacity; permission; leisure, spare time; free will; idleness, inactivity," noun use of infinitive leisir "be permitted," from Latin licere "be permitted" (see licence). The -u- appeared 16c., probably on analogy of words like pleasure. Phrase leisured class attested by 1836.