The meaning of WHY is for what cause, reason, or purpose. How to use why in a sentence. used to express surprise or anger: 3. the reasons for something: . Feb 9, 2025 · "Why?" A question as old as humanity, and as relevant today as ever. Explore the history, meaning, and necessity of the question that drives discovery from toddlers to theoretical physicists. You use why with 'not' in questions in order to express your annoyance or anger. For example: I went to Siberia. Sep 22, 2016 · A simple but powerful model for how leaders inspire action, starting with a golden circle and the question "Why?" …...more Why definition: For what purpose, reason, or cause; with what intention, justification, or motive.