Being an attorney for someone refers to representing and advocating for them in legal matters. The antonyms of this phrase would be words or phrases that indicate the opposite of representing or advocating for someone. Some antonyms of "being an attorney for" could include representing an opposing party, working against someone's legal interests, betraying or abandoning someone in a legal matter, or ignoring someone's legal needs altogether. While being an attorney for someone is typically associated with loyalty, trust, and effective legal representation, its antonyms bring to mind disloyalty, lack of trust, and ineffective or harmful legal counsel.