When it comes to identifying synonyms for the phrase 'abet's partner', there are several options that come to mind. 'Accomplice' is a common term that refers to someone who assists another person in a criminal act or wrongdoing. Similarly, 'co-conspirator' can also be used to describe someone who is involved in a plot or scheme together with another person. 'Associate' or 'collaborator' can also be used to describe someone who is involved in a joint effort or project with another person, whether legal or illegal. Whatever term is used, it is important to remember that all of these words refer to someone who is knowingly and willingly assisting another person in some way.