This article focuses on the suffixed verbs denominatives and deverbatives of the Anonymous Catechism (1605), i.e. the suffixed derivatives of nominals and verbs. All forms of suffixed verbs and their derivatives were extracted from this source. A total of 301 words were collected. Non-recurring suffixed verbs were identified and generalised by removing prefixes. This revealed that the Anonymous Catechism contains 105 non-repeating suffixed verbs. The suffixed verbs found in the Catechism were divided into synchronically non-segmentable and segmentable verbs, and the basis and categories of the latter were then clarified. The ratio of deverbatives to denominatives, the categories of derivation, the frequency and derivability of suffixes were established.