noun
Refers to a person who deceives others by pretending to be someone they are not, or by telling lies. Often carries a strong negative connotation.
彼は偽り者だとみんなに言われている。
Everyone says he is a liar.
あの政治家は偽り者だという評判だ。
That politician has a reputation for being a fraud.
Compound of 偽り (itsuwari, 'lie, falsehood') and 者 (mono, 'person'). The exact historical derivation is uncertain, but the word has been used since at least the Edo period.