Translation guide
The English word "fraud" covers both criminal deception and a person who deceives. In Japanese, these are expressed with different words, and the legal/criminal sense has specific terms.
The crime of deceiving someone for financial or personal gain.
The general legal term for fraud, covering various types of deception for gain.
彼は詐欺の罪で逮捕された。
He was arrested on fraud charges.
The company was sued for fraudulent activities.
Specifically the crime of fraud in legal contexts.
He was indicted for fraud.
A colloquial term for a swindle or con, often used for smaller-scale tricks.
That story is a fraud.
A person who pretends to be something they are not, often to deceive others.
An object or document that is fraudulent, counterfeit, or not what it claims to be.
詐欺 (sagi) means the crime of fraud, not the person. To call someone a fraud, use 詐欺師 (sagishi) or 偽物 (nisemono).
詐欺 is the formal, legal term for fraud. ペテン is a casual, old-fashioned word for a trick or swindle, often used in conversation.
あの医者は偽物だった。
That doctor was a fraud.
いかさま師に騙された。
I was tricked by a fraudster.
Fraudulent billing was uncovered.