愚蠢

stupid;foolish;silly
没有文化的军队是～的军队，而～的军队是不能战胜敌人的。An army without culture is a dull-witted army,and a dull-witted army cannot defeat the enemy./你们这样做是～的。It is stupid (or silly,foolish) of you to do that./没有人会相信它，谁也不会那么～。No one is foolish enough to believe it./～到了极点the height of stupidity; nothing can be more foolish/～的决定foolish (or stupid)decision /～的行（举）动stupid move;silly act;foolish action (or act)