Same word as vagarious:

any way the wind blows, arbitrary, blowing hot and cold, careless, changeful, contrary, crotchety, effervescent, erratic, every which way, fanciful, fickle, fitful, flaky, flighty, freakish, gaga, helter-skelter, humorsome, impulsive, inconstant, kinky, lubricious, mercurial, moody, mutable, notional, odd, picky, punchy, queer, quirky, temperamental, ticklish, unpredictable, unreasonable, unstable, up and down, vagarious, variable, volatile, wayward, whimsical, yo-yo