If you describe something as preposterous, you mean that it is extremely unreasonable and foolish.
例句
The whole idea was preposterous.整個想法都荒唐透頂。...their preposterous claim that they had unearthed a plot.他們無比愚蠢地聲稱自己發(fā)現(xiàn)了一個陰謀
英漢詞典釋義
adj.
反常的,荒謬的;荒謬可笑的
It is preposterous!豈有此理!It would be preposterous to shovel coal with a teaspoon.用茶匙鏟煤 是荒謬的。
英英詞典釋義
Adjective
1. completely devoid of wisdom or good sense;
"the absurd excuse that the dog ate his homework""that's a cockeyed idea""ask a nonsensical question and get a nonsensical answer""a contribution so small as to be laughable""it is ludicrous to call a cottage a mansion""a preposterous attempt to turn back the pages of history""her conceited assumption of universal interest in her rather dull children was ridiculous"