The infinitive is a verbal form found in all Slavic languages except some South Slavic: Bulgarian and Macedonian (and the Serbian Torlak dialect), where the form became extinct a few hundred years ago. In this chapter, we shall focus on North Slavic: Polish (bezokolicznik), Russian (infinitiv, neopredelennaja forma glagola), and Czech (infinitiv/neurčitek).

The infinitive is marked for aspect but not for tense, mood, number, or pe…