In complicity refers to being involved in a wrongful act together with someone else. There are several synonyms that can be used in place of this phrase to convey the same meaning. These synonyms include connivance, collusion, conspiracy, abetment, collaboration, and participation. These words are often used interchangeably with in complicity, depending on the context and tone of the message being conveyed. While each of these terms may have a slightly different nuance in their meaning, they all reflect the idea of being involved in nefarious activities with another party. Therefore, writers can choose the best synonym that suits their purpose and target audience.