What Does the Term Earthshaking Mean?

: of great importance : momentous an earthshaking announcement.

Is earth shaking is a naming word?

Answer: The correct answer is earth shaking.

What is the meaning of I made another earth shaking decision?

Answer : The doctor took an “important” decision that he would shave daily and grow a thin moustache. And then he made another “earth shaking” decision that he would always keep his attractive smile on his face.