The phrase implies intentional deception, not just a mistake or error.

Intent Matters

Using 'in bad faith' suggests a negative judgment about someone's actions.

Negative Connotation

It implies that trust has been violated in a relationship or agreement.

In legal contexts, it often implies a violation of contractual or legal obligations.

Underlines deliberate failure to meet one's commitments or promises.

It's used when there's an expectation for honesty that's not met.