No, the noun brother-in-law is a compound noun, a noun made up of two or more words that forms a noun with a meaning of its own.
A possessive noun is a noun that indicates that something in the sentence belongs to that noun. A possessive noun is indicated by an apostrophe -s ('s) or just an apostrophe (') at the end of the noun.
The possessive form of the noun brother-in-law is brother-in-law's.
Example: My brother-in-law's name is Stephen.
No, he is not possessive. The possessive form would be his.
The possessive noun of Sam is Sam's.
The possessive noun for "diplomat" is "diplomat's." For example: The diplomat's speech was well-received.
No, "she's" stands for she is. The singular possessive noun for a female is her or hers.
The possessive form for the plural noun wives is wives'.
The possessive singular noun is explorer's. The possessive plural noun is explorers'.
The possessive form for the noun coyote is coyote's.
The possessive form of zoo is zoo's.
The possessive form for the noun preacher is preacher's.
The possessive form for the noun laboratory is laboratory's.
No, he is not possessive. The possessive form would be his.
The possessive form for the noun oxygen is oxygen's.
The possessive form for the noun coyote is coyote's.
The possessive form is grandson's.
The possessive form is island's.
The singular possessive noun is Rex's.
No, it is a singular possessive noun.