entre nous
Between ourselves, he keeps a mistress.
Entre nous, il a une maîtresse.
Between ourselves, he was dismissed for bribery.
Entre nous, il a été renvoyé pour corruption.
Just between ourselves, I don't think he's going to succeed.
Entre nous, je ne pense pas qu’il réussira.
Let's keep this matter between ourselves.
Gardons cette affaire entre nous.
But we must draw a firm line between ourselves and this man they're looking for!
Mais nous devons absolument nous démarquer de cet homme qu’ils recherchent !
— M (1931)