形容詞 harebrained:

1. very foolish
   同義詞：insane, mad

hare.brained

adj.（形容詞）
Foolish; flighty:
愚蠢的；輕浮的：
例句：
a harebrained scheme.
一項愚蠢的計劃

The first part of the compoundharebrained is often misspelled hair in the belief that the meaning of the word is .with a hair-sized brain. rather than .with no more sense than a hare..Thoughhairbrained has a long history, this spelling is not established usage.
復(fù)合詞harebrained 的前半部分常被錯拼為 hair ， 因為人們認為該詞的含義更接近于.沒什么頭腦的.而不是.象野兔一樣愚蠢的.。雖然后一種寫法hairbrained 的產(chǎn)生已經(jīng)有一段很長的歷史， 但這種寫法仍不是公認的用法