quietness

n.平静，安定，安静

quick-minded, quick-tempered, quick-witted, quicken, quickie, quicklime, quickly, quickness, quicksand, quicksilver, quickstep, quid, quid pro quo, quiescence, quiescent, quiet, quieten, quietism, quietist, quietly, quietude, quietus, quiff, quill, quilt, quin, quince, quincentenary, quinine, Quinquagesima, quinsy, quintessence, quintessential, quintessentially, quintet, quintuplet, quip, quire, quirk, quirkiness,