What is the meaning of Bad_faith?

The misrepresentation of one's own true motive.

Intent to deceive or mislead another to gain some advantage; dishonesty or fraud in a transaction (such as knowingly misrepresenting the quality of something that is being bought or sold).

A malicious motive by a party in a lawsuit. This has an effect on the ability to maintain causes of action and obtain legal remedies.

The existentialist concept of denying one's total freedom of will.

Source: wiktionary.org