Curiosity is a fundamental human motivation that influences learning, the acquisition of knowledge, and life fulfillment. Our ability to understand the benefits (and costs) of being a curious person hinges on adequate assessment. Synthesizing decades of prior research, our goal was to improve a well-validated, multi-dimensional measure of curiosity (Kashdan et al., 2018). First, we sought to distinguish between two types of social curiosity: the overt desire to learn from other people versus covert, surreptitious interest in what other people say and do. Second, we sought to remove weaker items and reduce the length of each subscale. Using data from a survey of 483 working adults (Study 1) and 460 community adults (Study 2), we found evidence to support the pre-existing four dimensions of curiosity (Joyous Exploration, Deprivation Sensitivity, Stress Tolerance, and Thrill Seeking) along with the separation of the fifth dimension into Overt Social Curiosity and Covert Social Curiosity. Each factor of the Five-Dimensional Curiosity Scale Revised (5DCR) had substantive relations with a battery of personality (e.g., Big Five, intellectual humility) and well-being (e.g., psychological need satisfaction) measures. With greater bandwidth and predictive power, the 5DCR offers new opportunities for basic research and the evaluation of curiosity enhancing interventions.