temperamental, enigmatic, tempestuous, flamboyant, charismatic, impetuous, loquacious, irrepressible, wily, pugnacious, talismanic, erratic, petulant, unpredictable, irascible, eccentric, voluble, headstrong, fiery, imperious, peerless, brash, precocious, garrulous, moody, shrewd, unflappable, hotheaded, canny, flighty, protean, deft, diminutive, loose cannon, truculent, feisty, prodigal, affable, peripatetic, imperturbable, fickle, rangy, idiosyncratic, mesmeric, flappable, coltish, taciturn, crafty, domineering, streaky, prickly, ferocious, swashbuckling, excitable, chameleonic, diffident, callow, maladroit, fearsome, wayward, buccaneering, roguish, lanky, combative, astute, languid, masterful, bombastic, mesmerizing, gregarious, sublime, iconoclastic, prodigious, extrovert, tumultuous, unassertive, egotistical, fearless, skilful, beguiling, inscrutable, genial, cocksure, gifted, cagey, nerveless, impish, dazzling, masterly, effervescent, fractious, ruthless, stakhanovite, unforthcoming, unerring, amiable, sphinxlike, cantankerous, burly, unmannered, brusque, enfant terrible, arsenic, detergent, fertilizer, bodily, quinine, aspirin, caustic, inflammatory, mordant, opiate, opioid, sickness, abrasive, annoyance, antiseptic, cases, chlorine, colds, commercial, diffuse, sedative, irritant, antimonial, arsenical, astringent, laxative, purgative, emollient, stimulant, inflammable, irritating, officinal, salicylic, saturnine, styptic, antacid, antibiotic, antiphlogistic

merbromine, mercurochrome

changeable, changeful, erratic, fickle, quicksilver