Related Clues:
- Investigators of closed cases?
- Additional source of security for customs
- With a final twist, 20ac's partner's done things?
- Habits of well-bred wise men?
- Swear about man's habits
- Fundamental social standards
- Moral attitudes
- Homeland Security Department agency
- Spelling bee requests
- Grammar Nazis' concerns
- Lexicographers' concerns
- Linguists study them
- Aromatic plant seized by American customs
- Phraseologists' concerns
- Accepted conventions in America ends appalling practice nowadays