Collocations for afraid - adj.

be, feel
look, seem, sound
become, grow
make sb
What has made you so deeply afraid of your boss?

extremely, rather, very
deeply, desperately, mortally, terribly
really, truly
almost
She was tense, almost afraid to open the letter.

a little, slightly, etc.
half
He was half afraid to look at her.

just, simply
You do know, don't you? You are just afraid to tell me.

genuinely
suddenly
He stopped abruptly, suddenly afraid to say the words out loud.

physically

for
Roger was very afraid for her.

of
Charlie is afraid of marriage.

nothing to be afraid of
Don't worry. There's nothing to be afraid of.