languid

Synonyms: apathetic blah blahs comatose dopey easy energyless enervated faint feeble heavy impassive inactive indifferent inert infirm lackadaisical laid-back languishing languorous lazy leaden leisurely lethargic limp moony nebbish phlegmatic pining sickly sleepyhead slow sluggish snoozy spiritless supine torpid unconcerned unenthusiastic unhurried uninterested weak weary wimpy

Antonyms: alert animated energetic lively spirited vivacious