Recevoir quelqu’un à la bonne franquette = To treat a person without ceremony.
Frein
Ronger son frein = To put up with annoyance in silence.
A vieille mule frein doré = Old women have the finest clothes.
Friandise
Aimer les friandises (chatteries) = To have a sweet tooth.
Friser
Elle frise la quarantaine = She is just upon forty.
Froid