Related Clues:

• Student's challenge
• Word with history or surgery
• From the pie hole
• Nonwritten exam
• Like some interviews
• Taken by mouth
• Big part of a grade
• Put in the mouth
• Important test
• Meant to be heard
• __ vaccine
• Paperless test
• Exam that's hard to cheat on
• With 16-Across, term climax
• Word before sex or fixation