add insult to injury

: to join or unite so as to bring about an increase or improvement

: to say further : append

: to combine (numbers) into an equivalent simple quantity or number

: to behave with pride or arrogance : vaunt

: to treat with insolence, indignity, or contempt : affront

: a gross indignity

: injury to the body or one of its parts

: an act that damages or hurts : wrong

: violation of another's rights for which the law allows an action to recover damages

: hurt, damage, or loss sustained