lunatic

n. 瘋人、癲狂者、愚蠢的人

a. 瘋癲的、愚蠢的、喪心病狂的、精神錯亂的

英文釋義

1. an insane person
2. a reckless impetuous irresponsible person
3. insane and believed to be affected by the phases of the moon