noun
A person who is not honest; often implies a character flaw rather than a single act.
彼は不正直者だから、約束を守るとは思えない。
He's a dishonest person, so I don't think he'll keep his promise.
あの不正直者には気をつけたほうがいい。
You'd better watch out for that cheat.
Compound of 不 (fu, 'not') + 正直 (shōjiki, 'honest') + 者 (mono, 'person').