The meaning of WHY is for what cause, reason, or purpose. How to use why in a sentence.
an introductory expression of surprise, disagreement, indignation, etc: why, don't be silly! Etymology: Old English hwī; related to Old Norse hvī, Gothic hveileiks what kind of, Latin quī
why, adv., int., & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary
Why is an interrogative adverb that can be used alone and shows emotions like surprise or anger. For example: I went to Siberia.
