The wife of your brother is your sister-in-law.
Your brother's wife is your sister-in-law. The English language has no relationship term for the brother of your sister-in-law. He is not considered to be related toyou, although he is your brother's brother-in-law.
greek word for your wife's brother in law
The English language has no relationship term for the wife of your cousin's brother. You are not considered to be related to her.
The wife of your brother is your "sister-in-law" In English, this is true whether the brother is older or younger than you are.
Your brother-in-law's wife may be your sister.However, if your bother-in-law is the brother of your spouse, his wife is not your sister and the English language has no special term for her relationship to you. It is easiest to call her "my brother-in-law's wife."
Your brother's wife's cousins are not related to you and the English language has no special term for that. The same applies to the cousins of a stepbrother's wife.
Your brother's son is your nephew, but the English language has no term for a relationship between you and the wife of your nephew. If you have to refer to her other than by name, the best you can do is call her "my nephew's wife" or "my brother's daughter-in-law."
Your husband's brother is your brother-in-law. The English language has no special term for your relationship to his wife. Most people simply refer to "brother-in-law's wife."Of course, to you husband his brother's wife is his sister-in-law.
Your brother's wife is your sister-in-law and your wife is your brother's sister-in-law. The two wives are not related to each other and the English language has no special term for one of them to use in naming the other.
Your husband's brother is your brother-in-law. Your brother-in-law's wife is not related to you, but is your husband's sister-in-law. The sister of your husband's sister-in-law is not related to you or to your husband.
Aunt
If you are close to your step-brother, or to his wife, you can call her your sister-in-law. If you are not close, you can call her your "step-brother's wife."