imbecile

n (a) (esp adult) person with abnormally low intelligence （尤指成年人）低能者, 弱智者. (b) (infml 口) stupid or silly person; fool 蠢人; 傻瓜.

illusive, illusory, illustrate, illustration, illustrative, illustrator, illustrious, illustriously, ILO, im-, image, imagery, imaginable, imaginary, imagination, imaginative, imaginatively, imagine, imam, imbalance, imbecile, imbecilic, imbecility, imbibe, imbroglio, imbue, IMF, imitate, imitating, imitation, imitative, imitator, immaculate, immaculately, immanence, immanent, immaterial, immature, immaturity, immeasurable, immeasurably,