Foolish = adjective; lacking good sense or judgement; silly or unwise Stupid = adjective; lacking intelligence or common sense.

FOOLISH=1 WHO WOULD DO ANY THING STUPID=1 WHO DOESNT KNOW MUCH IT IS COMPLICATED BUT TO BE FOOLISH IS TO BE STUPID , TO BE STUPID ISNT ALWAYS TO BE FOOLISH

Examples: He was angry with himself for having made such a foolish mistake. 他为犯如此愚蠢的错误而对自己气恼不已。 Can you persuade her to give up her foolish plans? 你能劝她放弃她那些愚蠢的计划吗？ I felt rather foolish when I couldn't answer the teacher's question. 当我回答不出老师的提问时，我觉得自己很愚蠢。 购买没有保单的汽车是愚蠢的。 It is foolish to buy a car without a warranty. 真是个愚蠢的白痴！ What a stupid idiot! 他为犯如此愚蠢的错误而对自己气恼不已。 He was angry with himself for having made such a foolish mistake. 他说了什么来解释他那愚蠢的行为？ What did he say in explanation of his stupid behavior? 他把那个愚蠢的女孩当作一个玩物。 He treated the silly girl as a plaything. 这愚蠢的结尾使得整个情节变得一点都不可信。 The silly ending robs the plot of any credibility 对这些荒谬的指控我们是不甘受辱的。 We refuse to be insulted by these absurd accusations. 多麽荒谬的念头！ What a ridiculous idea! 多荒谬的建议啊！ What an absurd suggestion! 无论报纸上刊登什么荒谬的东西，总有人相信。 Whatever ridiculous thing the newspaper prints, some people always believe it. 他的演讲中有许多可笑的错误。 He made many ludicrous mistakes in his speech.

Stupid: 1. In a stupor; stupefied. 2. 2. Slow to apprehend; dull; obtuse. 3. Showing a lack of sense or intelligence. Informal: Uninteresting; trite or dull: “a stupid job.” Synonyms: Stupid, slow, dumb, dull, obtuse, dense, crass. These adjectives mean lacking mental acuity. “Slow” and the informal “dumb” imply chronic sluggishness of perception or understanding. “Stupid” and “dull” occasionally suggest a mere temporary state. “Stupid” and “dumb” can also refer to individual actions that are extremely foolish. “Obtuse” implies insensitivity or unreceptiveness to instruction. “Dense” suggests a mind that is virtually impenetrable or incapable of grasping even elementary ideas. “Crass” refers especially to stupidity marked by coarseness or tastelessness. While “foolish” carries no strong emotion, “stupid” can be insulting.

Foolish: 1. Lacking good sense or judgment; silly: “foolish remarks.’’ 2. Resulting from stupidity or misinformation; ill-advised; unwise: “a foolish decision.” 3. Devoid of meaning or coherence; ridiculous; inane: “a foolish grin.” 4. Abashed; embarrassed: “I feel foolish telling you this.” Synonyms: Foolish, silly, fatuous, absurd, preposterous, ridiculous, ludicrous. These adjectives are applied to what is devoid of wisdom or good sense. “Foolish,” the least emphatic or derogatory, implies poor judgment in a person or general lack of wisdom or soundness in concepts or entities. “Silly’ suggests what lacks point, purpose or semblance of intellectual content. “Fatuous” intensifies the idea of emptiness or inanity and often also implies, in persons, smugness of lack or awareness of one’s stupidity. “Absurd, together with the remaining terms, implies obvious departure from truth, nature, reason or common sense. “Preposterous” suggests what is so far from reason or sense that it seems a travesty of them and does not merit consideration. “Ridiculous” refers to what inspires derision and contempt because of its absurdity. “Ludicrous” applies to what causes scornful laughter.