not be able to hit the broad side of a barn
To have very poor aim, such as while using firearms or in sports.
No, I am really not good at batting in baseball. I cannot hit the broad side of a barn, really.
VERBS
be, feel, prove, seem
ADV
perfectly, quite, well
She was quite able to fix the broken lamp by herself yesterday evening.
better, more
With more training, the new employees became more able to handle complex customer requests.
just
She was just able to finish her homework before the bus arrived.
barely, hardly, only just, scarcely | less
VERBS
be, seem
My manager seems able to handle even the most difficult problems at work.
ADV
extremely, very | fairly, reasonably