under (your) belt

already achieved or experienced.

She had fourteen years as a manager under her belt and knew the job as well as anyone.

He has several literary awards under his belt.

• someone gets religion
• someone has got game
• someone has more bark than bite
• someone is at disposal
• someone is at your disposal
• someone is in business
• someone of a certain age
• someone par excellence
• someone's answer
• someone's answer someone
• someone's answer something
• someone's ass is on the line
• someone's bag of tricks
• someone's bark is worse than bite
• someone's bark is worse than their bite
• someone's beauty sleep
• someone's best bet
• someone's better half
• someone's blood boils
• someone's blood is up
• someone's blood runs cold
• someone's bottom drawer
• someone's bottom line
• someone's bread and butter
• someone's butt is on the line