carefree:
depressed,
sad,
unhappy,
anxious,
heavyhearted.
easygoing:
critical,
intolerant,
nervous,
hurried,
violent,
planned,
agitated,
strict,
deliberate,
hyped,
demanding,
excited.
happy-go-lucky:
dissatisfied,
discontented,
worried,
troubled,
upset,
distressed,
disconsolate.
insouciant:
high-strung.
lighthearted:
down,
heavy-hearted.
relaxed:
premeditated,
formal,
wild,
stiff,
turbulent,
rigid,
difficult.