mercurial, tempestuous, headstrong, petulant, impetuous, cantankerous, ornery, hotheaded, feisty, finicky, surly, moody, irascible, excitable, truculent, erratic, cranky, prickly, snappish, flighty, quarrelsome, abrasive, fiery, prima donna, egotistical, enigmatic, mouthy, combative, extroverted, pugnacious, precocious, eccentric, brittle, loquacious, talkative, domineering, brusk, unpunctual, brash, flamboyant, stroppy, unpredictable, fickle, distractible, bossy, affable, irritable, incommunicative, obstinate, garrulous, wily, rambunctious, gregarious, argumentative, diminutive, unflappable, chatty, loose cannon, grumpy, cocky, mulish, stubborn, snarly, standoffish, peevish, easygoing, brusque, likeable, egoistical, voluble, impulsive, ungifted, egocentric, combustible, balky, flappable, brutish, unexcitable, hyperactive, charismatic, belligerent, fussy, fractious, genial, streakier, spiteful, taciturn, testy, diffident, tetchy, uncouth, likable, introverted, sullen, neurotic, unassertive, possessive, inconstant, affectionate, boorish, amiable, grouchy, characterological, inborn, innate, psychoneurotic, stylistic, antisocial, schizoid, idiosyncratic, ingrained, inheritable, attitudinal, dispositional, heritable, inherent, neurasthenic, predisposing, undesirable, distinctive

agreeability, agreeableness, moodiness, personality, prima donna

emotional, erratic, moody, undependable, unreliable