The term 'be proxy for' can be summarized as acting on BEHALF of someone else. This is often done by a representative, such as an attorney or a legal guardian. The crossword solutions for this term are 'BEHALF' (6 letters), 'COEN' (4 letters), and 'INSTEAD' (7 letters). 'BEHALF' refers to the act of representing someone else, while 'COEN' is a shortened form of the word 'COUNSELOR, ' which is a person who provides legal advice. Lastly, 'INSTEAD' implies that the proxy is taking the place of the original person.