familiarly
🇺🇸
/fəˈmɪliərli/
🇬🇧
/fəˈmɪliəli/
in a way that is friendly and not too formal, but sometimes too much
He touched her cheek familiarly, as if they were close friends.
in a way that people know well
The elephant's nose, more familiarly known as the trunk, is very useful.