Yes! It works for both one person and a group, as long as the context is formal.
Not inherently, but it can be. It's best avoided by learners until they understand the social hierarchy perfectly. Stick to Dumneavoastră.
Usually no. It would sound very cold or sarcastic. Use 'tu'. However, in some very traditional rural families, children still use 'dumneavoastră' or 'dumneata' for parents.
No, it is always pronounced as the full word dumneavoastră.
Usually no, it sounds very cold or sarcastic. Use tu. However, in some very traditional rural areas, children might use it for grandparents.
Not inherently, but it can be. It's better to avoid it as a learner and stick to dumneavoastră to be safe.
