Referring to arbitrary entities with placeholders

A speaker/writer uses a placeholder (PH) to fill in the syntactic slot of a target word when she has no immediate access to the word or prefers to avoid explicitly mentioning it for contextual reasons. In the present article, I point out a hitherto understudied usage of PHs: a speaker/writer who does not have in mind a specific target form may use a PH to refer to an arbitrary entity (e.g. person, object, action, event, proposition). I substantiate this claim by analysing a variety of original data on Japanese wh-derived PHs. Further evidence for this claim comes from a cross-linguistic survey of wh-derived PHs in Korean and demonstrative-derived PHs in Romanian and Bulgarian. I show that the arbitrary-referential function is observed in PHs in all these languages, regardless of their origins (i.e. wh word, demonstrative) and their categories (i.e. nominal, verbal).