SummaryAll South Slavic languages, from Bulgaria in the South-East to Slovenia in the North-West, are part of a dialect continuum. This paper outlines the position of what is traditionally called Kajkavian in that continuum in light of old accentual isoglosses. Kajkavian shares several old prosodic-phonological isoglosses with Slovene (such as the rise of the neocircumflex), while on the other hand it is connected with Western Štokavian and Čakavian through some morphological-categorial accentual isoglosses (like the innovative accent of the infinitive and