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?

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

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

/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

Dec 24, 2025 · (intransitive, transitive) To ask (someone) the question "why?".

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

WHY meaning: 1 : for what reason or purpose; 2 : used to offer a suggestion or to say that a course of action is not necessary

Definition of why adverb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.