it's a cinch . it's a cinch {informal sentence} It is very easy. "What about the final exam?" Fred asked. "It was a cinch" Sam answered. Compare: PIECE OF CAKE. Categories: add yours {informal sentence} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: I Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry