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

WHY definition: for what? for what reason, cause, or purpose?. See examples of why used 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?: …

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

for what cause or reason: I don't know why he left. on account of which: the reason why she refused. the reason for which: That is why he returned. the cause or reason: to figure out the …

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

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?