be not much of a (something)

be not much of a (something)

To be particularly unimpressive in some capacity. She's a brilliant director, but she's not much of a writer. It isn't much of a hotel—more of a bed and breakfast, really.
See also: much, not, of

not be much of a something

not be a good something: You’re not much of a help, standing there with your hands in your pockets.I’m not much of a cook.It wasn’t much of a speech really.
See also: much, not, of, something