This study explores the identification of diminutive and pejorative verbs in Croatian using NooJ. It focuses on suffixal verb formation, a prevalent method in Croatian word-formation, particularly for verbs expressing diminutiveness or pejorativeness. These verbs typically feature an additional suffix within their structure, distinguishing them from regular verbs. The paper outlines the creation of a morphological grammar in NooJ designed to detect verbs with these specific suffixes and the verb stems from which they are derived. The research applies this grammar to a large corpus, extracting occurrences for analysis and dictionary enhancement. The findings aim to enrich Croatian linguistic resources on the NooJ platform and provide a foundation for further morphological studies. The results also contribute to the development of a more sophisticated morphological parser for Croatian and could also benefit several research areas, including computational linguistics, lexicography, language education, cognitive science, and artificial intelligence.