The indefinite pronouns of a language derive from a number of possible sources, including interrogative pronouns and generic nouns.  In Maori, the word <i>wai raanei</i> 'somebody' relates to the interrogative <i>wai</i> 'who,' while the term <i>mea</i> 'thing; something' demonstrates a relationship between the indefinite and a generic noun.

<br><br><b>Reference</b><br>
Haspelmath, Martin. 2008. Indefinite Pronouns.
In Haspelmath et al (2008), chapter 46.Available online at <a href="http://wals.info/feature/46">
http://wals.info/feature/46</a href>.
