The meaning of WHY is for what cause, reason, or purpose. How to use why in a sentence.

When we ask for reasons in speaking, we can use the phrase why is that? In informal conversations we often say why’s that?: …

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?

Feb 2, 2026 · Adverb why (not comparable) (interrogative) For what cause, reason, or purpose. Introducing a complete question.

/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

a. for what reason, purpose, or cause?: why are you here?. b. (used in indirect questions): tell me why you're here.

Why definition: For what purpose, reason, or cause; with what intention, justification, or motive.