"Am proxy for" refers to the act of representing someone or something. Antonyms for this phrase would include words like 'authentic,' 'genuine,' or 'real.' These words carry the opposite meaning of proxy, as they describe something that is original or unmediated. Other antonyms could include 'personal,' 'unique,' or 'individual,' as these words emphasize the individuality and uniqueness of a person or item. By understanding antonyms for the phrase "am proxy for," we can expand our vocabulary and develop a deeper appreciation for the intricacies of language.