Crossword clues for Eureka! is one:MOTTOEureka is oneCRYEureka! is oneCRYEureka! for one.EXCLAMATIONEureka!, for one.MOTTOEureka, for one.MOTTOCalifornia's "Eureka," for oneAHAMOMENTIt might cause one to cry "Eureka!"IDEAOne might elicit a "Eureka!"