The crossword solution for the term 'BUY ALTERNATIVE' is LEASE, which is a five-letter word. Leasing is an alternative to buying, and it is a contractual arrangement in which a business or individual can use an asset owned by another party for a specified period of time. The lessee pays a fee for the use of the asset, and the lessor retains ownership of the asset. Leasing is often used for large purchases such as vehicles, real estate, and equipment.