This paper focuses on weak indefinite nominals in Italian and Italo-Romance varieties. It presents the rich variation found across Italo-Romance in a pan-Romance perspective and claims that Italo-Romance displays a robust use of the definite article with indefinite interpretation, unlike many other Romance varieties. The paper provides an overview of different semantic and syntactic contexts in which indefiniteness can be detected and distinguished from reference to kind, which is also expressed by the definite article in all Romance languages. The paper then provides diagnostics to capture the dimensions of variation and optionality among five different indefinite determiners: the so-called “partitive article”, the apparent definite articl...