Being british I said "mum" instead of the Americanised "mom". Apparently that's wrong. Americans only...
Afraid so. Take a look at the flag on the main page. I try to hold on to my British English skills though.
shouldn't "brothers and sisters" be accepted here ?
No, it's a specific word meaning siblings.
Shouldn't it be Mother, father, and siblings?
We learned inschool taht you have to translate "Geschiwster" as "brothers and(/or) sisters". Is "sibling(s)" more formal?
Why is it siblings (plural)? And not sibling?