clueless
adjective /ˈkluːləs/
/ˈkluːləs/
(informal, disapproving)- very stupid; not able to understand or to do something
很愚蠢的;(对某事)不懂的,无能的 - He's completely clueless about computers.
他对计算机一窍不通。 - Henry was a young and very clueless officer.
亨利是一个年轻而无知的军官。
- He's completely clueless about computers.