Opposite words for lively :
heavy, slow, lustreless, unanimated, lacklustre, unambitious, desiccated, lusterless, dull, vapid, tedious, impassive, dreary, dead, idle, desiccate, humdrum, torpid, lackluster, sleepy, boring, lazy, languid, bovine, stupid, stolid, lifeless, tired, weary, unenrgetic, monotonous, limp, inert, phlegmatic, sluggish, quiescent, quiet, apathetic, arid, spiritless, uneventful, lackadaisical, leaden, indolent, listless, languishing, asleep, lethargic, inelastic, languorous, inanimate, irksome, inactive, drab.
My lively imagination pictures you in a double character. "The Black Robe", Wilkie Collins.
The detective's suspicions travelled at a lively rate around the village and before twenty- four hours it came to the ears of the Merriweather Girls. "The Merriweather Girls and the Mystery of the Queen's Fan", Lizette M. Edholm.
Oh, we shall have many a lively half- hour when Mrs. Wade calls! "Denzil Quarrier", George Gissing.
Paper- hanging evidently had its lively side. "The Underdog", F. Hopkinson Smith.