Sulkiness
/ˈsʌlkinəs/
Definition 1 of 1
Pro Tip 1/3Emotional State
Sulkiness implies an internal emotional condition, often perceived as negative or immature by others. 
Her sulkiness after losing the game was noticeable.
Pro Tip 2/3Silent Discontent
Sulkiness doesn't usually involve verbal complaints; it's a quiet demonstration of displeasure. 
He sat in sulkiness, not saying a word about the cancelled trip.
Pro Tip 3/3Short-lived Mood
Sulkiness is often temporary and can change with mood or situation. 
The child's sulkiness vanished when offered ice cream.