demented

形容词 demented:

1. affected with madness or insanity
   同义词：brainsick, crazy, distracted, disturbed, mad, sick, unbalanced, unhinged

1. When her child was two hours late, she became quite demented.
   她孩子晚了两个小时，她心急如焚。

de.ment.ed

adj.（形容词）
Mentally ill; insane.
疯狂的：精神病的；狂乱的
Suffering from dementia.
有疯病的

【引伸】
dement.edly
adv.（副词）
dement.edness
n.（名词）