annoyed or unhappy:
Keith had seemed moody all morning.
often changing quickly from being in a good temper to being in a bad temper [= temperamental]:
a moody teenager
Lewis was moody and brilliantly clever.
moody places, films, pictures, and music make you feel slightly sad, lonely, or perhaps frightened:
the moody grey sea in the dawn light
She was staring moodily into the fire.
—moodiness noun [uncountable]