Bad Faith - (adjective + noun)
If someone acts in bad faith, they act in an intentionally dishonest way. For example, they might enter into an agreement without intending to honor that agreement. It is often used when describing a party in a negotiation that is just pretending to reach a settlement.
Source: Adapted from the Free Legal dictionary.
Example of Use: The trade union broke off the discussions, saying that management had been negotiating in bad faith and had no intention of reaching an agreement.