Related Clues:
- ''__ Thesaurus'' (synonym book)
- Substitute teacher?
- Synonymist/physician
- Reference book next to Webster
- Peter Mark --, physician remembered for his 'Thesaurus of English Words and Phrases'
- He's synonymous with the thesaurus
- Big name in synonymy
- Writer's resource
- Name on thesauruses
- Thesaurus eponym
- Famous thesaurus writer
- Brit who definitely wasn’t at a loss for words
- Name on many thesaurus books
- Where to find words for words
- Physician known for his reference book