The paper focuses on the comparison of the adjectival pairs with the formants -ový - -ovitý (e.g. trojuholníkový - trojuholníkovitý, košeľový - košeľovitý) in Slovak monolingual dictionaries and on the question of the optimal description of their mutual relationship in the new Dictionary of Contemporary Slovak. Although the wordformative semantics of the formants differ (relational meaning in various concretizations vs. the meaning of similarity), the adjectives with the formant -ový often acquire the meaning of similarity, too, and the adjectival pairs overlap semantically.