more power to someone
Best wishes to someone, as in He's decided to climb Mount Everest—well, more power to him. [Mid-1800s] For a more recent synonym, see right on.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.