There are many synonyms for the phrase "aids in wrongdoing." Some of these include abets, assists, foments, promotes, supports, and encourages. These words all suggest some level of involvement in a negative or illegal activity. For instance, to abet someone is to encourage or support their harmful behavior. To assist in wrongdoing is to provide aid in some way, whether it be through providing resources or offering physical support. Fomenting can refer to creating or stirring up trouble, while promoting and supporting both suggest actively working towards a negative outcome. Ultimately, any of these words imply that the person or action being described is contributing to a harmful or immoral situation.