What Is the Difference Between languid and languorous?

The letter L holds claim to a payload of words in English that connote a lack of energy or enthusiasm. Two of them—languid and languorous—derive from the same source, the Latin verb languēre ("to languish"). Languid describes the kind of sluggishness that one often experiences from fatigue or weakness ("the illness left her feeling languid"). Languorous applies more to someone who just doesn't feel the will to get up and do anything ("he felt languorous on a rainy Sunday afternoon"). There is also lackadaisical, which implies a halfhearted effort given from lack of care ("lackadaisical seniors just floating along until graduation"), as well as listless, which suggests a lack of spirit caused by physical weakness, dissatisfaction, or sadness ("she was listless for a few weeks following the breakup").