Historical clue formulations

• Suffix with sulf- — 2025-09-10
• Ending with sulf- or fluor- — 2024-08-12
• Ending with fluor- or chlor- — 2024-04-11
• Chemical suffix — 2022-06-24
• Carb- follower — 2021-12-09
• Chemical suffix — 2019-04-19
• Common suffix for 7-Downs — 2018-01-26
• Perfect — 2016-12-22
• Suffix with cyan- — 2015-09-14
• Chemical suffix — 2014-11-05
• Ox- tail? — 2014-08-30
• Suffix with glycer- — 2014-08-17
• Suffix with sulf- — 2014-03-17
• Suffix with fluor- or chlor- — 2013-09-15
• Chemical ending — 2011-12-02
• Suffix with brom- — 2011-11-22
• Suffix with ox- or sulf- — 2011-09-13
• Periodic table suffix — 2011-05-27
• Chemical suffix — 2010-04-25
• Chemical suffix — 2010-03-30
• Suffix with chlor- or sulf- — 2009-12-15
• Chemical suffix — 2009-06-21
• Suffix with chlor- — 2009-04-27
• Suffix with cyan- — 2008-09-21
• Chemical suffix — 2008-06-28
• Chemical suffix — 2008-05-04
• Chemical compound suffix — 2008-03-05
• Suffix with lact- — 2006-05-21
• Suffix with hydrox- — 2006-02-20
• Suffix with chlor- or sulf- — 2005-08-29
• Suffix with chlor- — 2005-05-16
• Chemical suffix — 2005-03-09
• Suffix with glycer- — 2004-12-09
• Suffix with glycer- — 2003-02-16
• Chemical suffix — 2002-09-08
• Suffix with chlor- — 2002-03-10
• Suffix with brom- — 2001-08-25
• Chemical ending — 2001-04-13
• Suffix with sulf- — 2000-12-18
• Chemical suffix — 2000-12-15
• Suffix with sulf- — 1999-11-24
• Suffix with sulf- — 1999-02-26
• Chemical suffix — 1998-05-24
• Chemical suffix — 1997-09-26
• Fish of the carp family — 1995-10-01
• Chemical suffix — 1995-07-15
• Chemical suffix — 1995-07-06
• Chemical suffix — 1994-08-13