Definitions
There is 1 meaning of the phrase
On Earth.
On Earth - as an adverb
Used with question words to convey surprise
Example: "What on earth are you doing?"
Example Sentences
"What on earth is that noise?"
"I have no idea how that got there, but it is the most beautiful thing on earth."
"Why on earth would you want to go there?"
"How on earth did he escape from prison?"
"The desert is one of the most challenging environments on earth."
