1. comparative form of bratty; more badly behaved, spoiled, or annoying (especially of a child)
Usage: informal

Examples

• She became even brattier after her parents gave in to her demands.
• The younger sibling was brattier than his older brother.
• His behavior got brattier as the day went on.
• The child seemed brattier when she was tired.
• After being spoiled all summer, he returned to school much brattier.
• The tantrum made her seem brattier than usual.