The term 'GRAD'S EXAM' can be solved by the crossword solution 'ORAL', which is a four-letter word. An ORAL exam, also known as an ORAL test or viva voce, is an assessment of a student's knowledge and understanding of a particular subject. It is usually conducted by a professor or instructor in an academic setting, and involves the student answering questions posed by the examiner. ORAL exams are often used to assess a student's ability to think on their feet and articulate their thoughts in a concise manner.