| 2023-02-28 | Name that's practically synonymous with synonyms |
| 2021-05-25 | Thesaurus eponym |
| 2020-08-12 | Reference book next to Webster |
| 2020-05-16 | Substitute teacher? |
| 2019-08-17 | Author who wouldn't let bygones be bygones? |
| 2019-07-14 | Shelfmate of Webster |
| 2019-06-27 | You might take his word for it |
| 2019-04-12 | 19th-century author whose works are still read word for word |
| 2018-08-26 | Wordsmith Peter Mark ___ |
| 2018-05-07 | Peter who compiled a book of synonyms |
| 2016-06-19 | Webster shelfmate |
| 2014-09-28 | Shelfmate of Bartlett's, maybe |
| 2014-06-13 | Word menu option? |
| 2014-03-05 | Reference work next to Bartlett's, maybe |
| 2012-02-23 | Synonym source |
| 2011-11-25 | Subject of the 2007 biography subtitled "The Man Who Became a Book" |
| 2011-10-26 | Man of many words? |
| 2010-03-22 | Thesaurus creator |
| 2010-01-03 | Reference volume, informally |
| 2009-09-21 | Thesaurus compiler |
| 2009-02-18 | Physician/synonymist |
| 2008-05-23 | Doctor often seen on writers' bookshelves |
| 2008-01-28 | Thesaurus author |
| 2006-07-09 | Big name in reference books |
| 2005-08-28 | Reference book for a writer |
| 2005-07-08 | Shelfmate of Webster |
| 2004-02-09 | Synonym man |
| 2003-11-13 | Doctor-turned- synonymist |
| 2003-07-15 | Word reference pioneer |
| 2002-09-17 | Synonym compiler |
| 2002-02-20 | Man of many words? |
| 2002-01-03 | Man in search of meaning? |
| 2001-07-16 | Man of many words? |
| 2000-07-03 | Book that's read word-for-word |
| 2000-03-12 | Something to read word for word? |
| 1999-07-15 | Book that might help an 8-Down |
| 1999-07-06 | Standard word reference |
| 1998-12-31 | Writer's reference |
| 1998-12-23 | Man of many words |
| 1998-10-01 | Doctor-turned-wordsmith |
| 1997-10-15 | Man of many words |
| 1997-06-23 | Thesaurus compiler |
| 1996-06-23 | Man of many words |
| 1996-03-23 | Man of many words |
| 1994-06-23 | Physician-turned-wordsmith |