Definition from macmillandictionary.com
I haven’t been able to get any more information.
I’d love to be able to sing like you.
She’s barely able to read or write.
As far as I have been able to find out, he has no criminal convictions.
Barely able to stand, John staggered into the room.
They’re able to buy whatever they want.
I don’t know if I’ll be able to come.