avuncular

eno-, setämäinen, setä-

hyväntahtoinen In the manner of an uncle, pertaining to an uncle.
1997, w:David Nokes|David Nokes, Jane Austen: A Life:

Both uncle Frank and uncle Stephen Austen had made it a point of principle to be rigorously unsentimental in the discharge of their avuncular obligations.

Thornton's reputation was that of a soft-hearted and avuncular veterinarian known for getting teary-eyed while listening to even slightly sentimental stories.

A man with such a nice, avuncular personality would not blow up the world.