yerno, son-in-law.
yerto, rigid, stiff.
yugo, yoke.
zahareño, wild, shy, stubborn.
zalamería, flattery.
zambomba, rustic drum (open at one end, closed at the other, with a tightly-stretched skin from which projects a reed, which is rubbed to produce noise).
zapatero, shoemaker, cobbler.
zapato, shoe.
zarzuela, light opera.