vagary
noun
[ ˈveɪɡ(ə)ri ]
• an unexpected and inexplicable change in a situation or in someone's behaviour.
• "the vagaries of the weather"
Similar:
quirk,
idiosyncrasy,
peculiarity,
oddity,
eccentricity,
unpredictability,
fluctuation,
foible,
whim,
whimsy,
notion,
conceit,
caprice,
fancy,
kink,
crotchet,
hang-up,
thing,
megrim,
singularity,
Origin:
late 16th century (also as a verb in the sense ‘roam’): from Latin vagari ‘wander’.