In this paper, I am going to deal with illocutionary intensification, one of the specific features of curse texts, and the role prefixes play in it. Illocutionary intensification operates at the discursive-pragmatic level, modifying the illocutive act through strengthening and modal reinforcement, and is typically applied to verbs and verbal modifiers. Latin curse tablets evidence various linguistic peculiarities. They are highly formulaic and contain features related to the category of language for special purposes. These texts often employ peculiar textual rules which reflect the magical ritual accompanying the text and are focused on the supposed effect on the curse victim. In many of these texts, we can observe various strategies of illocutionary intensification, such as word repetition, which is relatively rare in literary texts, and the use of evaluative prefixes.