This paper investigates the role of prosody in deciding the meaning of the so-called indeterminate words (Kuroda 1965) in Korean that can be used as either interrogatives (who/what/...) or indefinites (someone/something/...). While the wide-spread impressionistic observation is that the phonological prominence such as high pitch of the indeterminate word signals an interrogative reading (Choe 1985, Kang 1988, Kim 2000), a production experiment shows that phonological dephrasing after the indeterminate word is the most conspicuous prosodic feature of wh-questions (Jun & Oh 1996). This paper supports the latter conclusion by showing that dephrasing is indeed a decisive factor in perceiving wh-questions, while pitch boosting is not. Rather, the mere prominence of an indeterminate word helps disambiguate the scope configuration of an indefinite reading, giving a bias toward a wide scope interpretation.