By presenting the Thesaurus of Modern Slovene, the largest open-access collection of Slovene synonyms, this paper describes the concept of a responsive dictionary, a dictionary that allows its data to continuously respond to the changes in language and the feedback from the language community. We begin by briefly summarizing the method of its construction and its technical aspects. A great deal of deliberation and work has been put into interface design, with the aim to make the Thesaurus as user-friendly as possible for all digital media. This is followed by a more detailed description of the types of user input (e.g. synonym suggestions, synonym votes) and feedback (interface improvement suggestions) collected as part of development, as well as the methodology for their implementation. We also touch upon a series of dissemination activities aimed specifically at community building and user involvement. In conclusion, we describe our plans for the future, such as updates to be implemented in version 1.1 of the Thesaurus