Akademik

unenrgetic
adjective
deficient in alertness or activity
-

bullfrogs became lethargic with the first cold nights

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

Useful english dictionary. 2012.