WHY definition and meaning | Collins English Dictionary You use why in questions when you ask about the reasons for something Why hasn't he brought the bill? Why didn't he stop me? Why can't I remember the exact year we married?
Why - Definition, Meaning Synonyms | Vocabulary. com 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
Five whys - Wikipedia The five whys were initially developed to understand why new product features or manufacturing techniques were needed, and was not developed for root cause analysis