verb, noun · to lose money, have a financial deficit, or be deficient

公司的生意亏了很多钱。

verb · used to introduce an ironic remark about someone who has fallen short of expectations

亏你还是个老师，连这道题都不会。

verb · luckily; fortunately; thanks to

亏得你及时赶到，不然我就迟到了。

verb · to treat someone unfairly or cause them to suffer a loss

我绝不会亏了你的。