lethargy
STATE OF TIREDNESS, WEARINESS, FATIGUE, OR LACK OF ENERGY
Lethargic; Lethergy; Sluggishness; Low energy
['l???d?i]
¦ noun
1. a lack of energy and enthusiasm.
2. Medicine a pathological state of sleepiness or deep unresponsiveness.
Derivatives
lethargic adjective
lethargically adverb
Origin
ME: via OFr. from late L. lethargia, from Gk lethargia, from lethargos 'forgetful'.