why on earth
why on earth
Used to ask a question that emphasizes one's shock, anger, disgust, incredulity, etc. Why on earth are they here when the party doesn't start for hours? Why on earth would I want a table that doesn't even stand up anymore? We're just about to sit down for dinner, so why on earth would you give the kids candy now?
See also: earth, on, why
Farlex Dictionary of Idioms.
- why in God's name
- why doesn't (one) (do something)
- why don't you?
- say over
- be on the market
- why, oh why
- why ever
- why ever...?
- It's anybody's guess
- it's anybody's/anyone's guess