vagarious (adjective) capricious: given to sudden behavior change
Sinonime: 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
Antonime: constant,
dependable,
sensible,
staid,
steadfast,
steady