Conditional connection explored: the case of Sicilian cusà

Stemming from a wh -question, the Sicilian marker cusà ( cu sa ‘who knows’) expresses several epistemic meanings, which can also reach the realm of conditionality. The paper explores the discourse profile of cusà as it emerges from the analysis of diachronic data (from the eighteenth and nineteenth centuries) and present-day informal Sicilian, namely spoken Sicilian and present-day informal Sicilian as written by speakers on the web. These data suggest a possible path of development leading from the wh- question to new functions. We propose that the origin of this development can be explained in the light of the strategy of the “impossible question”, while the diverse functions of cusà emerged through concomitant processes of desemantization, reanalysis, and subjectification.