• adj. 發狂的，瘋狂的；精神錯亂的
• v. 精神錯亂；變得癡呆（dement的過去分詞）

de-, 向下，離開。-ment, 思想，詞源同mind. 指思想偏離正軌的，發狂的。

demented (adj.)

1640s, from obsolete dement "drive mad."

1. He had been granted his own TV show by some demented executive.

某個愚蠢的主管已經批準他自己來做一個電視節目。

來自柯林斯例句

2. Nursing a demented person is an all-consuming task.

照顧一個精神病人是時刻都要勞神費力的苦差事。

來自柯林斯例句

3. I've been nearly demented with worry about you.

我一直為你擔心，都快發瘋了。

來自《權威詞典》

4. At what point does it become necessary to place a demented person in a nursing home?

到了什么時候算是有必要把早老性癡呆病人送到養老院去？

來自柯林斯例句

5. Sid broke into demented laughter.

錫德狂笑起來。

來自辭典例句