- The definition of listlessness is a lack of spirit, interest and energy.
When you are recovering from a cold and are in low spirits, disinterested and just lay around all day, this is an example of listlessness.
A dog displaying listlessness.
Variant of listless
- having no interest in what is going on about one, as a result of illness, weariness, dejection, etc.; spiritless; languid
- characterized by such a feeling
Origin of listlesslist + -less