not have an earthly chance
Also, stand no earthly chance. Have no chance whatever, as in She doesn't have an earthly chance of getting into medical school, or Bill stands no earthly chance of winning the lottery. The use of no earthly in the sense of “no conceivable” dates from the mid-1700s.
Show More
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.