There is some dialogue in a movie I saw:
I don't want him knowing about this.
I always thought it was
I don't want him to know about this.
I've been confused for days. What is the difference between them, if any?
There is some dialogue in a movie I saw:
I don't want him knowing about this.
I always thought it was
I don't want him to know about this.
I've been confused for days. What is the difference between them, if any?
The difference is subtle.
"I don't want him to know about Xyz" means you'd rather he not acquire knowledge about Xyz while "I don't want him knowing about Xyz" means you'd rather he not possess knowledge about Xyz.
But you will possess knowledge if and only if you acquire it (and you don't forget it). A difference that doesn't make a difference isn't really a difference.
Either form is acceptable and in common use.
AwantBVerb-ing is quite common, though only with an accusative subject, not a genitive one. In other words, *I don't want his knowing about this is right out, but I don't want him knowing about this is just fine, in fact as likely as the infinitive. – John Lawler Sep 20 '14 at 14:33