quack-quack

n (used by and to small children 儿语) duck 鸭鸭; 鸭子

Pyrex, pyrites, pyromania, pyromaniac, pyrotechnic, pyrotechnics, Pyrrhic victory, python, Q, Q, q, QB, QC, QE2, QED, qr, qt, qto, qty, qua, quack, quackery, quad, quadr(i)-, Quadragesima, quadrangle, quadrangular, quadrant, quadraphonic (also quadrophonic), quadraphony (also quadrophony), quadratic equation, quadrennial, quadrilateral, quadrille, quadrillion, quadrophonic, quadrophony, quadruped, quadruple, quadruplet, quadruplicate, quaff,