The crossword solution for the term THEY'RE NOT BUYING IT is RENTERS, which is a seven-letter word. RENTERS are people who do not own a property but instead pay to use it for a certain period of time. They're Not Buying It is an expression used to describe someone's disbelief or lack of interest in something. It implies that the person does not believe what they are being told and is not willing to purchase whatever is being offered.