duffer

a complete duffer at languages.

He's a bit of a duffer when it comes to technology.

She's always been a duffer at sports.

Don't be such a duffer, just give it a try!

I'm a bit of a duffer when it comes to cooking.

He's a duffer when it comes to directions.

She's a duffer at math but excels in art.

I'm a duffer at remembering names.

He's a duffer at fixing things around the house.

She's a bit of a duffer when it comes to public speaking.

Don't worry if you're a duffer at first, practice makes perfect!