For you, the sky’s the limit.

for the good of all

for next to nothing

for good

for a lark

to go for a real rave-up

Forbearance is not acquittance

to forbid

forbidden

forbidden fruit

Forbidden fruit taste the sweetest

force majeure risk

to force a smile

to force an open door

to force apart

to force back

to force down

to force fee

to force off

to force on

to force one’s way

to force open

to force someone onto the defensive

to force someone out into the open

to force someone to do something