Synonyms and related words :
April showers, Proteus, active, activist, activistic, alive, animated, antelope, arrow, aureate, blue darter, blue streak, bouncing, bouncy, brass, brassy, brazen, breezy, brisk, bronze, bronzy, bubbly, cannonball, chameleon, changeable, chipper, cloud shapes, copper, coppery, coquettish, courser, cupreous, cuprous, dart, eagle, ebullient, effervescent, electricity, energetic, express train, faddish, ferrous, ferruginous, fickle, flash, flighty, flirtatious, frisky, full of go, full of life, full of pep, gazelle, gilt, gold, gold-filled, gold-plated, golden, greased lightning, greyhound, hare, inconstant, iron, ironlike, jet plane, kaleidoscope, lead, leaden, light, lightning, live, lively, mercurial, mercurous, mercury, militant, moon, nickel, nickelic, nickeline, peppy, perky, pert, pewter, pewtery, rocket, rolling stone, scared rabbit, shifting sands, shot, silver, silver-plated, silvery, skittish, smacking, snappy, spanking, spirited, sprightly, spry, steel, steely, streak, streak of lightning, striped snake, swallow, the weather, thought, thunderbolt, tin, tinny, torrent, toying, undependable, unpredictable, unreliable, vacillating, versatile, vivacious, volatile, water, weather vane, weathercock, wheel of fortune, whirligig, wind, zingy