a catch to it

a catch to it

A problem, drawback, or hidden detriment to something, often one that is initially concealed as a means of entrapment. I know this sounds like a great job offer, but there's a pretty big catch to it—I'd have to move across the country.
See also: catch

catch to it

a hidden problem associated with it. It sounds good at first, but there's a catch to it. You have to pay all costs up front.
See also: catch