Your husband's sister is your sister-in-law. Her husband is not related to you.
The children of your husband's siblings are your nieces or nephews. Their children are your great-nieces or great-nephews.
The word husbands' is the possessive form of the plural noun husbands, a word for "of MORE THAN ONE husband".
husbands' ex: All of the women have their husbands' money.
Your husband's sister's kids are referred to as your nieces and nephews by marriage. More specifically, you can call them your "nieces" if they are girls and "nephews" if they are boys.
My brothers-in-law are my sisters' misters. I don't know which of the sisters' husbands he is.
The singular form of the plural noun husbands is husband.
Many widows who have not remarreid and who are close to their sisters-in-law continue to consider them to be sisters-in-law. If the widow remarries, that can create a more complicated situation and they may be called "former sisters-in-law," or "the sister of my late husband."
This question makes unfounded assumptions about sisters' hate for in-laws. Some sisters may hate of their husband's sister, but many do not. It is misleading and incorrect to presume that all sisters hate or do not hate one or another type of in-law.
Well, it depends how close you are to your husbands family. If you really want to know they are cousins-in-law.
Husband is singular. The plural form is husbands.
The plural form of the noun husband is husbands.The plural possessive form is husbands'.example: Our husbands' names are Matt and Mike.
Demeter does not have a husband.