Synonyms and related words :
affective, arbitrary, atavistic, bluff, bodily, born, brusque, capricious, changeable, characteristic, coeval, congenital, connatal, connate, connatural, constitutional, crabbed, crabby, cranky, crotchety, curt, dispositional, emotional, erratic, excitable, explosive, fanciful, fantasied, fantastic, fickle, flaky, freakish, genetic, grouchy, gruff, grumpy, harebrained, hereditary, high-strung, hot-blooded, hot-tempered, hotheaded, huffish, huffy, humorsome, hypersensitive, impatient, in the blood, inborn, inbred, incarnate, inconsistent, indigenous, inherited, innate, instinctive, instinctual, intellectual, irascible, irritable, kinky, maggoty, mental, mercurial, miffy, moody, motiveless, native, native to, natural, natural to, notional, organic, oversensitive, peevish, petulant, physical, prickly, primal, quirky, sensitive, short, short-tempered, snappish, spiritual, testy, tetchy, thin-skinned, ticklish, touchy, uncertain, undependable, uneven, unpredictable, unreasonable, unreliable, unrestrained, unstable, vagarious, vagrant, variable, volatile, wanton, waspish, wayward, whimsical|