Verbal nouns requiring reflexive clitics in West-Slavic languages research-article Martin Janečka Wiener Slavistisches Jahrbuch. Neue Folge, Jahrgang 8 (2020), Ausgabe 1, Seite 122 - 135 Using data from the Czech, Slovak and Polish language corpora, this paper tries to explain how the reflexive forms of verbs behave during nominalization. It concerns particularly the verbs učit (se), učit' (sa), uczyć (się) ‘to teach sb sth (to learn sth)‘ and its deverbative forms teaching (učení, učenie, uczenie) vs. learning (učení se, učenie sa, uczenie się). In some contexts the form teaching expresses the meaning of the form learning. I put forward arguments why it is necessary to consider the reflexive clitics SE, SA and SIĘ the first object of a given verb, resp. the necessary complement of a noun in the function of an incongruent attribute. I also point out different phenomena that are responsible for this kind of elimination of reflexive SE after the verbal noun using the example of the verb to teach sb sth (to learn sth) in its Czech, Slovak and Polish equivalents.