letargie

Etymology
From late, from , from. This is a compound of and, which consists of negative prefix  and noun.

Noun

 * 1)  Lethargy pathological drowsiness
 * 2)  Lethargy apathy, lack of emotions and interest
 * 3)  Lethargy quantity characterizing the rate of decelaration of neutrons

Etymology
.

Noun

 * 1) lethargy