Yes, there are different kinds of smiles. There's the sardonic smile, of course. A self-conscious smile. A smug smile (a smirk). A contemptuous smile (a sneer). A ready smile. A wistful smile. And I might even admit of a sad smile. But a riant smile? NO! As BranShea said, that means a smiling smile, and up with that I will not put.

Stuart Showalter