lassitude
noun
Definition
Listlessness; weariness; fatigue
Synonyms
idleness, inaction, sluggishness
Antonyms
action, diligence, energy
Sentences
1.) Every morning, lassitude prevents me from getting out of bed.
2.) After crossing the finish line of the race, Grace felt a feeling of lassitude.
Leslie Knope after Telethon