Bad
expendable - Not essential, able to be used up or sacrificed without significant loss, easily replaced or not necessary for long-term use.
The workers didn't feel any sense of job security, and they felt expendable, because they were fired whenever the demand for the factory work slowed down.
vendetta - A blood feud in which the family of a murdered person seeks vengeance on the murderer or the murderer's family
As the final act of his vendetta against Rugen, Inigo pulled out his sword and said, "Hello. My name is Inigo Montoya. You killed my father. Prepare to die."
promiscuous - Lacking discretion or selectivity, especially in choosing relationships or associates; mixing or combining things randomly.
The character in the novel was portrayed as promiscuous, frequently engaging in relationships without commitment or emotional attachment.