blue . blue See: BETWEEN THE DEVIL AND THE DEEP BLUE SEA, BOLT FROM THE BLUE, ONCE IN A BLUE MOON, OUT OF THE BLUE or OUT OF A CLEAR BLUE SKY. No categories: add yours Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: B Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss