 A second group of objections to extending rigid status to expressions for properties specifically (just tacitly include kinds with properties—kinds are often counted as a sort of property) centers around the idea that the proposal seems committed to substantive metaphysical positions about abstract objects like kinds or properties, concerning which a theory of language ought to remain neutral (Devitt 2005; Haukioja 2006; Martí 1998, p. 487). For example, the proposal seems committed to rejecting nominalism. Some defenders of property terms’ rigidity are happy so to commit (Linsky 1984). Other defenders of property terms’ rigidity seek ways of accommodating nominalism (Martí 1998). 