The crossword solution for the term 'ONE WHO'S ALWAYS RIGHT?' is CUSTOMER, with 8 letters. A CUSTOMER is someone who purchases goods or services from a business. Customers are often seen as the most important part of a business, as they are the ones who provide the revenue that keeps the business running. Therefore, customers are often treated with respect and their opinions are taken into consideration. This could be why the phrase 'one who's always right' is associated with customers.