In this paper I defend against a certain objection the view that it is possible to account for validity and kindred notions for moral language within a non-cognitivist framework by appeal to the descriptive meaning of moral terms. The objection is that such an account leads to an asymmetry in the accounts it offers for synonymy in different contexts; in certain contexts it holds that sameness of meaning for a moral term depends on its evaluative meaning, in other contexts that (...) it depends on the term's descriptive meaning. In the third part of the paper I try to show why non-cognitivists should be prepared to live with that asymmetry. In the process I also deal with two other objections. (shrink)