Related Clues:
- Like an unwritten exam
- Like many a thesis defense
- Type of history or tradition
- Word with "surgeon" and "historian"
- Spoken by mouth
- Roberts who died in December, 2009
- __-B: dental care brand
- Type of 50-Across
- __ hygiene
- Grueling grilling
- Like some tough tests
- Spoken or sung
- ___ exam
- Nonwritten 36 Down
- Word with "hygiene" or "surgeon"