The phrase "wash your hands of" means to disconnect oneself from a difficult or problematic situation or person and refuse to accept any responsibility for it. There are some synonyms that can be used instead of this phrase, such as "disassociate," "disown," "renounce," "abdicate," "divest," "disavow," "sever," "cut off" or "break ties." These words convey a sense of finality and are often used when someone wants to completely separate themselves from something or someone they feel is no longer worth their time or effort. Whatever phrase or word is used, the sentiment is clear: the person wants to be free from any obligation to deal with the situation or person any longer.