crackbrained
(a.)精神錯亂的,顛狂的,不謹慎的
crackbrained, Crack-brained a. Having an impaired intellect; whimsical; extremely foolish; crazy; as, crackbrained notions.
Syn: -- idiotic.
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crackbrained
adj : insanely irresponsible; "an idiotic idea" [syn: idiotic]