Anxiety and L2 self-confidence have been suggested as vital determinants of willingness to communicate (WTC) in a foreign-language (FL) learning environment. Studies also demonstrate that it is a concern over pronunciation mistakes that is particularly likely to cause embarrassment and apprehension in FL students. Linking these two facts may lead to an explanation for why many post-puberty learners avoid participating in speaking tasks in the FL classroom. The present article reports the outcomes of a study adopting a mixed-methods approach, which showed that "pronunciation anxiety" (PA)--conceptualized as pronunciation self-perception, fear of negative evaluation, and beliefs concerning the pronunciation of the target language--is related to WTC (r = -0.60 at p < 0.001). Moreover, results of t-tests suggested that high-PA learners have statistically lower degrees of WTC than their low-PA classmates. A link between the two constructs was further observed through the following situational variables: level of familiarity with interlocutor(s), group size, type of task, and target-language proficiency level. The quantitative data were supported by answers to open-ended questions.