to add insult to injury
to make a bad situation worse for someone who has already been treated badly

[TahlilGaran] Dictionary of Contemporary English ▲

add insult to injury
to make a bad situation even worse for someone by doing something else to upset them.
First of all he arrived an hour late and then, to add insult to injury, he proceeded to complain about my choice of restaurant.

[TahlilGaran] English Idioms Dictionary ▲

add insult to injury
to make a person who feels bad feel worse, to make a bad situation worse
Our boss added insult to injury when she refused to let us use the telephone as well as the computers during lunch.

[TahlilGaran] English Idioms Dictionary ▲

add insult to injury
v. phr.
1. To hurt someone's feelings after doing him harm.
He added insult to injury when he called the man a rat after he had already beaten him up.
2. To make bad trouble worse.
We started on a picnic, and first it rained, then to add insult to injury, the car broke down.

[TahlilGaran] English Idioms Dictionary ▲