A parthian shot is a phrase that refers to a final insult or an act of defiance made before leaving or concluding a conversation, argument, or relationship. There are several synonyms that convey a similar meaning, including parting shot, last word, final blow, parting swipe, parting jab, final taunt, departing insult, parting dig, or exit line. While all of these phrases may be used interchangeably, they all refer to a similar action or statement made just before parting ways. These phrases can be used in various situations, ranging from casual conversations to heated debates, but they all convey the sense of finality or conclusiveness of the conversation or argument.