A state of physical and/or mental weakness and a lack of vigor.
1
A pleasant languour, like a light opiate, infused his consciousness; yet he was by no means mentally inactive.
2
It was a hard, stern life, with its smoke, heat, frosts, and languour; but they loved it profoundly.
3
The heat was so intense as to throw languour on the garden and croquet-parties, which replaced the winter balls and sleigh drives.
4
"She has the languour of the South-Shedoes not jump from one subject to another, she is frankly only interested in love."