unleavened

/ʌnˈlɛvənd/
adjective
  1. Made without yeast or other rising agent; flat and dense in texture.
    • Matzo is a type of unleavened bread eaten during Passover.
    • Unleavened dough does not rise, so it produces a flat, cracker-like bread.
    • Many cultures have traditional unleavened flatbreads like tortillas and chapati.