fiery, gingery, high-spirited, mettlesome, spirited, spunky

aggressive, ambitious, assertive, high-pressure, in-your-face, militant, pushyanimate, animated, bouncing, bouncy, brisk, energetic, feisty, frisky, jaunty, jazzy, kinetic, peppy, perky, pert, racy, scrappy, snappy, spanking, sparky, sprightly, springy, vital, vivacious, zippyardent, fervent, impassioned, passionateemphatic, obtrusive

halfhearted, leaden, spiritless

bloodless, boring, dull, lifelessdead, inanimate, lackadaisical, languid, languorous, limp, listlessinert, lethargic, sleepy, sluggish, tired, torpidlow-pressure, nonassertive, unaggressive, unambitious, unassertive, unenterprising