["\"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.", "/waɪ/ IPA guide Other forms: whys Definitions of why noun the cause or intention underlying an action or situation, especially in the phrase `the whys and wherefores' synonyms: wherefore", "This is an edited version (just over seven minutes) of Simon's Ted Talk from Puget Sound in 2009. The original full version (18 minutes long) has almost 7 million views on You Tube. In this video,...", "Define why. why synonyms, why pronunciation, why translation, English dictionary definition of why. adv. For what purpose, reason, or cause; with what intention, justification, or motive: Why is the door shut?", "The meaning of WHY is for what cause, reason, or purpose. How to use why in a sentence.", "WHY definition: 1. for what reason: 2. used to express surprise or anger: 3. the reasons for something: . Learn more.", "WHY definition: for what? for what reason, cause, or purpose?. See examples of why used in a sentence.", "Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages."]