If your half-sister had a son that would be a half-nephew to you
The sister's son would be the nephew of her brother.
If your sister-in-law is the sister of your spouse, her son is not related to your sister's son. If your sister-in-law is the wife of your brother, her son and your sister's son are first cousins.
You would be a great uncle, so they would be your great nephew
Your sister-in-law's son is your nephew.
There is no actual blood relationship. You would typically introduce her in that way, My son-in-laws's sister. Many refer to her as the sister-in-law.
She would be his step sister.
Your husband's sister's son is your nephew, just as your sister's son is your nephew.
If your sister-in-law is the wife of your brother, she is the mother of your brother's son. Her son-in-law would then be the brother-in-law of your brother's son. If your sister-in-law is your spouse's sister, her son-in-law is not related to you or to your brother's son.
Nothing............... kinda half sister though but not reli a blood relative Answer 2 tangled family? i totally understand. since you and your brother share one of the parents that adopted the little girl, she is your adopted half sister. send anyother family riddles my way!!
Your nephew.
If your niece's is by your sister but the brother is by your sisters new husband & another woman there would be no blood relation. If not then he's the nephew
Your grandson's half-brother would be the son of your son's wife and another man. This means the child has no blood relation to your son and, thus, to you. If the child was not adopted by your son, then he would be your son's stepchild. By extension, you could call the child your step-grandchild, but this isn't really a commonly used word. If your son has officially adopted the child, he would be his adoptive son and, by extension, your adoptive grandson.