fickle
adjective
[ ˈfɪk(ə)l ]
• changing frequently, especially as regards one's loyalties or affections.
• "celebs trying to appeal to an increasingly fickle public"
Similar:
capricious,
changeable,
variable,
volatile,
mercurial,
vacillating,
fitful,
irregular,
inconstant,
disloyal,
undependable,
unstable,
unsteady,
unfaithful,
faithless,
irresolute,
flighty,
giddy,
skittish,
erratic,
impulsive,
unpredictable,
random,
blowing hot and cold,
labile,
mutable,
Origin:
Old English ficol ‘deceitful’, of Germanic origin.