At somebody's discretion phrase
The freedom to decide to do something at your own will
You want to deal with this matter is at your discretion.
The boss gave Tom the permission to do the job at his own discretion.
1.Someone viewed with contempt
2. Very bad
1. He dropped out of college and became a crumb bum.
2. The food here is crumb bum! I will never come back to this restaurant once again.