The crossword solutions for the term DINER CUPPA are JOE (3 letters) and JAVA (4 letters). JOE is a common nickname for Joseph, which is a popular male name. JAVA is a programming language that is used to create applications and websites. It is also the name of a type of coffee, which is often served in diners. Therefore, the crossword solutions for the term DINER CUPPA are JOE and JAVA, which both have connections to the diner setting.