This is a special use of "that" in expressions such as "that bit more fun", "that little extra", "that tiny amount more" and similar. The meaning is about the same as "a bit more", with, um, a bit more emphasis. For me, this use of "that" also imparts a slightly chatty feel.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
GPYThis is a special use of "that" in expressions such as ...I'm glad you posted this, because I was stumped. I thought it was a mistake for "that much more fun". Considering that it sounds odd to my ear, I wonder if it's chiefly British.
CalifJimConsidering that it sounds odd to my ear, I wonder if it's chiefly British.It could be then.