brat
n. countable A2 Elementary US //ˈbɹæt// brat
n. a child or young person who is rude, selfish, or difficult to manage. You use this word when someone behaves badly and does not listen to rules.
n. a child or young person who behaves in a rude, selfish, or demanding way. Informal in register; often used as a mild reprimand.
Stop being such a brat and share your toys.
The toddler threw a tantrum in the supermarket, acting like a spoiled brat over the price of candy.
Though he was a respected senator in public, his colleagues whispered that he remained a brat at heart, prone to petty outbursts when denied his way.