Akademik

lethargic
adjective
deficient in alertness or activity
-

bullfrogs became lethargic with the first cold nights

Syn: ↑unenrgetic
Ant: ↑energetic
Similar to:
dazed, ↑foggy, ↑groggy, ↑logy, ↑stuporous, ↑dreamy, ↑lackadaisical, ↑languid, ↑languorous, ↑listless
See Also: ↑inactive
Derivationally related forms: ↑lethargy

Useful english dictionary. 2012.