Question

Difference between brothers in law and brother in laws

Answer 1

The plural of brother as in "male sibling" is always brothers. He had six brothersand three sisters, so family gatherings tended to be large affairs. The origin of brethren is an old type of plural for brother, but it is no longer used in that sense.

So the plural of "brother-in-law" (at least in the standard language) is "brothers-in-law", since the plural goes on the bare noun. The possessive cannot be *brother's-in-law; it has to be "brother-in-law's", and that is what native speakers say ("We went to my brother-in-law's house").

noun. The definition of brother in law is a man who is related to you through marriage to your spouse or sibling, not through blood. An example of a brother in law is your sister's husband. An example of a brother in law is your husband'sbrother.

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