I'm looking for the adjective that goes with sibling. My sentence would be something like: The [...] relationship. So the adjective would be used to denote that the relationship is one between ...
Here, I am confused. I cannot say "younger daughter-in-law" as the order of sons is defined by their age but we can't say that about their wives. So shall I say "my second daughter-in-law"?
If Leia loves her brother Luke, does she feel sisterly love (because she is his sister) or brotherly love (because he is her brother)?