dead beat

基本解释

He must be dead beat.
他肯定被打死了。
Nancy:A dead beat dad is someone who does not pay child support to take care of his child.
A dead beat dad 就是不肯付撫養費的父親。
edu.sina.com.cn
No doubt the store was crowded with last minute Christmas shoppers and the staff were dead beat and longing to get home.
沒有商店是在最後一刻聖誕購物者和工作人員擁擠的懷疑死亡毆打和渴望廻家。

From a collections perspective, though, if you are married to a dead beat loser or even someone who is somewhat casual about their financial obligations filing a joint return with them can be a no brains maneuver particularly in the final year of the marriage.
FORBES: Man Gets Innocent Spouse Status
Not much point in trying to rip off the account of a dead-beat, right?
FORBES: Home Depot, Sears, Kmart, and Kohl's Hit By Identity Theft Ring
Studies by the Government Accountability Office have identified tens of thousands of such dead-beat companies that are being awarded government contracts.
WHITEHOUSE: Tax Accountability in Government Contracts

If you refer to someone as a deadbeat, you are criticizing them because they try to avoid paying their debts.
If you describe someone as a deadbeat, you are criticizing them because you think they are lazy.