Culprit به انگلیسی
From Longman Dictionary
cul‧prit /ˈkʌlprɪt/ noun
the person who is guilty of a crime or doing something wrong
شخصی که مرتکب جرم یا انجام کار اشتباهی شده است
the reason for a particular problem or difficulty
دلیل یک مشکل یا مشکل خاص
Example
Police finally managed to catch the culprit
High production costs are the main culprit
The FBI was called in to help track down the culprits
But the union representing librarians countered that the culprits were incompetent management and expensive technology
Some money was taken from my desk yesterday. I think I know who the culprit is
