为什么
Meaning
- why?
- for what reason?
Example sentence
为什么不？
Why not?
Characters in 为什么
- 为 wèi because of
- 什 shén what — a bound character, never used outside the common question word
- 么 me a question and suffix particle, with no meaning of its own
为 for plus 什么 what — for what, hence why. 为 also heads 因为 and 以为.