Crossword Genius

Eponymous physicist Mach (5)

Ross

I believe the answer is:

ernst

(Other definitions for ernst that I've seen before include "Max __; Dadaist" , "He painted" , "Young partner" , "Max -, twentieth century German Surrealist artist" , "Surrealist; stern (anag.)" .)

I've seen this clue in The New York Times and The Wall Street Journal.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.