Denominal verbs are verbs formed from nouns by means of various word-formation processes such as derivation, conversion, or less common mechanisms like reduplication, change of pitch, or root and pattern. Because their well-formedness is determined by morphosyntactic, phonological, and semantic constraints, they have been analyzed from a variety of lexicalist and non-lexicalist perspectives, including Optimality Theory, Lexical Semantics, Cognitive Grammar, Onomasiology, and Neo-Construction Grammar. Independently of their structural shape, denominal verbs have in common that they denote events in which the referents of their base nouns (e.g., computer in the case of computerize) participate in a non-arbitrary way. While traditional labels like ‘ornative’, ‘privative’, ‘locative’, ‘instrumental’ and the like allow for a preliminary classification of denominal verbs, a more formal description has to account for at least three basic aspects, namely (1) competition among functionally similar word-formation patterns, (2) the polysemy of affixes, which precludes a neat one-to-one relation between derivatives displaying a particular affix and a particular semantic class, and (3) the relevance of generic knowledge and contextual information for the interpretation of (innovative) denominal verbs.