WHY


Meaning of WHY in English

n.

Function: conjunction

Date: before 12th century

1 : the cause, reason, or purpose for which <know why you did it> <that is why you did it>

2 : for which : on account of which <know the reason why you did it>

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.