ENThe present article introduces the notion of interpretive deontics, by which we mean deontic expressions (imperatives, hortative particles, infinitives, deontic modal verbs etc.) used interpretively (in the sense of [Sperber and Wilson 1986]), i. e., with reference to speech acts (usually imputed to imaginary interlocutors) expressing directives addressed to the speaker or some third person. The authors argue that interpretive deontics are a distinct gram type used by speakers in order to comment on other people’s expectations considered to be unreasonable. A chain of semantic development “request for permission → deontic request → rhetorical deontic request → negative evaluation of other people’s expectations → negative evaluation of other people’s assertions” is posited. In a further extension of this interpretive gram type, the element of negative evaluation may be dropped, which make interpretive deontics into a source of evidentials. The material for the investigation is taken mainly from Slavonic and Baltic languages.