to form a picture of something

to form a view on

to form a friendship

formal dress

formally

I formed several lasting friendships while I was at university

Formerly we used to canonise our heroes. The modern method is to vulgarise them.

formula

to be fortunate

Fortunately, not all men are as stupid as you.

Fortunately there was no one at home.

Fortunately there was no one about.

Fortunately, the Cold War is over.

Fortunately, in England at any rate, thought is not catching.

Fortune favours the bold

Fortune and glass soon break, alas!

Fortune favours the brave

Fortune smiles upon me.

to fortune upon someone

Fortune favours fools

Fortune is fickle

forty-one

forty

forty-two

forty-three