IPA: /ˈlɪstləsnəs/
KK: /ˈlɪstləsnəs/
A state of feeling tired and without energy or interest in anything.
After a long week of work, I felt a sense of listlessness and just wanted to relax.
Listlessness → It is formed from "listless" (from the Old English "lyst", meaning desire or pleasure, combined with the suffix "-less", meaning without) and the suffix "-ness" (meaning the state of being). The word "listlessness" refers to the state of being without desire or energy.
Think of being 'without' ('-less') any 'desire' ('lyst') — that's why listlessness means a lack of energy or enthusiasm.