The crossword solution for the term 'RENDER WORTHLESS' is 'VOID'. This term means to make something completely worthless or invalid. It can be used in a variety of contexts, such as legal documents, contracts, or financial transactions. In the context of a legal document, it would mean that the document is no longer valid and cannot be enforced. In the context of a financial transaction, it would mean that the transaction has been rendered worthless and cannot be recovered.