Lingaku- lit. covered with lice, one doesn't feel the itching anymore; up to one's ears in debt, one ceases to worry about it (idiom)
- fig. to be past worrying (about sth)
Generated: This idiom is used to describe a situation where someone has so many problems or difficulties that they become numb to them and stop worrying.
After so many years of problems, I have gotten used to it and now I am numb to them.