Definition of why exclamation from the Oxford Advanced Learner's Dictionary



BrE BrE//waɪ//
; NAmE NAmE//waɪ//
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(old-fashioned or North American English) used to express surprise, lack of patience, etc. Why Jane, it's you! Why, it's easy—a child could do it! Word OriginOld English hwī, hwȳ ‘by what cause’, instrumental case of hwæt ‘what’, of Germanic origin.
See the Oxford Advanced American Dictionary entry: why