en famille
/ɒŋfɑːˈmiːjə/adverb
1- with one's family和家人在一起：
when they went out en famille, Steven always drove.
他们全家一起出门时, 总是史蒂文开车。
1.1
- as or like a member or members of a family作为家人; 如家人般; 像一家人一样。
词源
French, literally 'in family'.