Last seen in:
- The Guardian - Quick crossword No 16,091 - Dec 2 2021
- New York Times - Apr 4 2020
- The Times - Concise - Sunday Times Concise No 1567
- The Guardian - Quick crossword No 14,493 - Oct 19 2016
- The Telegraph - QUICK CROSSWORD NO: 418 - May 29 2016
- Newsday.com - May 17 2013
- The Telegraph - QUICK CROSSWORD NO: 25,884 - Mar 24 2009
- Universal - Jan 13 2006
- The Times - Concise - Times2 Concise 2329 - April 30, 2001
- New York Times - Apr 24 1998
Related Clues:
- Not at all superficial
- Tough to fathom
- Fraught with meaning
- Rife with meaning
- Dark and rich, as color
- Noticeable
- Benchley best-seller (with ''The'')
- Like the Mariana Trench
- Benchley novel "The __"
- Far beneath the surface
- Strongly felt
- Multilayered
- Not easily understood
- Profoundly philosophical
- Like ocean trenches