flighty
adjective
[ ˈflʌɪti ]
• fickle and irresponsible.
• "you may be seen as too flighty and lightweight for real responsibility"
Similar:
fickle,
erratic,
changeable,
inconstant,
irresolute,
mercurial,
skittish,
whimsical,
capricious,
volatile,
unsteady,
unstable,
unbalanced,
impulsive,
irresponsible,
flippant,
giddy,
silly,
frivolous,
light-minded,
feather-brained,
scatterbrained,
reckless,
wild,
careless,
thoughtless,
heedless,
carefree,
insouciant,
dippy,
dopey,
nutty,
dappy,
batty,
dotty,
scatty,
ditzy,
Origin:
mid 16th century: from flight + -y1.