COMMON If someone washes their dirty linen in public or washes their dirty laundry in public, they talk publicly about unpleasant matters that should be private. We shouldn't wash our dirty laundry in public and if I was in his position, I'd say nothing at all. She thinks she can score points by airing the family's dirty linen in public. Note: There are many other variations of this expression. For example, you can leave out `in public' or `dirty'. In Spain, it seems, airing dirty linen is considered more serious than any offence itself. My brother has washed that linen in public and embarrassed me. Note: You can also just talk about dirty linen or dirty laundry to mean unpleasant facts that should remain private. We know much more than we ever did before about the doings of Congressmen. So, we're seeing more dirty laundry. It is certainly a huge disadvantage of being famous that everyone wants to see your dirty linen.