(a.) Lacking spirit or liveliness; listless\; languidly sentimental.

Micawberish apathetic ataractic backward benumbed blase bored careless casual cold cool dallying dead debilitated degage delaying devil-may-care dilatory dillydallying disinterested dispassionate disregardful dopey dormant droopy drugged dull easy easygoing emasculated enervated exanimate faineant foot-dragging free and easy heavy hebetudinous heedless idle inactive inanimate inattentive incurious indifferent indolent inert inexcitable insouciant jaded laggard lagging languid languishing languorous lax lazy leaden lethargic lifeless limp lingering listless loitering lukewarm lumpish mindless moribund negligent nonchalant numb offhand passive perfunctory phlegmatic pococurante pooped procrastinating procrastinative procrastinatory reckless regardless remiss romantic sated sentimental shuffling slack sleepy slothful slow sluggish somnolent spiritless stagnant stagnating stultified supine tepid torpid turned-off unanxious uncaring unconcerned undiscriminating unemotional unenthusiastic unexcitable unexcited unimpressed uninspired uninterested unmindful unmoved unsolicitous vegetable vegetative wan weary world-weary