lunaticKK [ˈlunəˌtɪk] ｜ /ˈlunəˌtɪk/
GEPT 中高級
C2noun
a person who is mentally ill, especially to an extreme or dangerous degree
It would be irresponsible to leave a known lunatic unsupervised.
瘋子；精神病患者
C2adjective
affected by insanity or mental illness
After weeks of sleepless nights and erratic behavior, his family realized he was a lunatic.
精神失常的；瘋癲的
C2adjective
reckless and/or impulsive in behavior
The teenager drove at high speeds through the city streets, weaving in and out of traffic, like a complete lunatic!