Dreye权威释义

n.

疯子，疯傻的人[C]
Who was the lunatic who gave the baby matches to play with?
是哪个白痴把火柴拿给婴儿玩的？

a.

疯的，精神错乱的
愚妄的，疯狂的
The man's lunatic behavior is a menace to society.
那个人的疯狂行为构成对社会的威胁。
a lunatic proposal
愚妄的提议

反义:

a.“精神异常的；愚蠢的”的反义词

同义参见:

以上来源于：《英汉大辞典》

n.

a person who is mentally ill (not in technical use).

▸an extremely foolish person.

ME: from OFr. lunatique, from late L. lunaticus, from L. luna ‘moon’ (from the belief that changes of the moon caused intermittent insanity).

以上来源于：《简明牛津英语词典》

以上来源于：《英汉医学词典》