In this paper, we intend to contribute to filling this gap by investigating semantic properties of two classes of Czech exceed verbs such as 'převyšovat' ('exceed': lit. 'over-highten') and 'překračovat' ('exceed'; lit. 'over-step'). To this goal, we will integrate two largely independent strands of theoretical research, i.e., formal semantic treatment of Slavic prefixes and prepositions as expressions that are lexically associated with scales and an approach to numeral modifiers as degree quantifiers of two types, specifically comparative and superlative modifiers.