Background: Narrative therapy (White & Epston, 1990) was developed as an approach to counselling, as a response to the power relations that influence people's lives. Its use with people who stutter has been documented. A basic tenet of narrative therapy is that the dominant problem-saturated narrative is challenged by externalizing the problem, in due course facilitating development of an alternative narrative. Within this process, the definitional ceremony involving outsider witnesses is a key procedure used to influence change. Aims: This paper describes definitional ceremonies, and their application within a narrative approach to therapy for stuttering. The analysis of a specific definitional ceremony is presented, leading to an exploration of identity as a public and social achievement. Methods: A definitional ceremony involving a woman who stutters and family members was recorded and analysed using two methods: interpretative phenomenological analysis and Heideggerian hermeneutic phenomenological analysis. Details of the clinical application of definitional ceremonies with this client are described. Results and conclusions: Results from both methods of analysis were found to be similar. Notable results include the fact that the stuttering per se was not presented as the problem; rather, the impact of stuttering, especially the experience of bullying, was a dominant theme. This paper shows how definitional ceremonies can open opportunities for clients to present themselves in a preferred way, forming the basis for a new story and revised identity. Emerging themes can be identified for reflection and discussion with the client for therapeutic benefit. Educational objectives: (1) to describe and explain to readers the process of narrative therapy, with special attention to the use of definitional ceremonies; (2) to provide detail regarding the clinical processes involved with a specific definitional ceremony with one client; (3) to have the reader appreciate the specific importance of involving outsider witnesses in the therapy process; (4) to discuss the outcomes of the use of this particular definitional ceremony. (Contains 1 table.)