Lively
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somber, phlegmatic, tedious, faint, light, stiff, spiritless, depressed, annoying, vapid, dreary, sluggish, debilitating, apathetic, monotonous, lethargic, inelastic, inactive, dull, unambitious, doleful, dispirited, brittle, lifeless, weary, unhappy, clumsy, tiring, boring, gloomy, uneventful, morose, sad, unpleasant, disinterested, depressing, sleepy, idle, exhausting, unfunny, unenergetic, down, fair, slow, quiet, tired, lazy, impassive, difficult, indifferent, quiescent, heavy.