The selected papers of this volume cover five main topics, namely ‘Certainty: The conceptual differential’; ‘(Un)Certainty as attitudinality’; ‘Dialogical exchange and speech acts’; ‘Onomasiology’; and ‘Applications in exegesis and religious discourse’. By examining the general theme of the communication of certainty and uncertainty from different scientific fields, theoretical approaches and perspectives, this compendium of state-of-the-art research papers provides both an interdisciplinary comparison of the latest investigations, methods and findings, and new advances and theoretical insights with a common focus on human communication.