petulant

/ˈpɛtjələnt/adjective

Rude, irritable, and childishly bad-tempered.

Example sentence

“The petulant customer snapped at the waiter over a small delay.”

Describes sulky, whiny anger over small things. Often aimed at adults who are behaving like spoiled children.

Related words

pharmacistA person trained in pharmacy, the science of preparing and dispensing medicines.pettyA young or junior schoolboy, whether small in size or in a low grade; usually used in the plural.philanthropyGenerous giving of money, time, or effort to improve the lives of other people.petalOne of the colored, usually soft parts that form the outer ring of a flower.phishingThe crime of using a fake identity online to get past security and trick people out of private information.pessimismThe tendency to expect that things will turn out badly.