Metaethical non-naturalists maintain that normative or evaluative properties cannot be reduced to, or otherwise explained in terms of, natural properties. They thus have difficulty explaining what these irreducibly normative properties are supposed to be, other than by saying what they are not. I offer a partial, positive characterization of irreducible normativity in naturalistic terms. At a first pass, it is this: that to attribute a normative property to something is necessarily to commend or condemn that thing, due to the nature of the property attributed. This theory characterizes normativity in terms of the natural phenomenon of performing certain familiar speech acts. The hypothesis does other explanatory work as well: it provid...