According to a current trend in social ontology, by articulating claims of social construction in terms of metaphysical grounding, we can shed light on the metaphysics of social construction and understand deep truths about social identities like race and gender. Focusing on two recent accounts, I argue that this move from social construction to grounding has limitations. While there are intelligible grounding claims that can explain certain ideas in social ontology, such grounding claims add nothing to what we have learnt (...) from constructionists about race and gender. Although some applications of this grounding approach attempt to remedy this and offer detailed analyses of how social kinds are grounded, they yield results that are inconsistent with some very plausible views about social construction. Thus, if we want to illuminate the metaphysics of social construction, we must explore other alternatives. (shrink)