Historical clue formulations

• Substantial — 2025-09-16
• Like material you can sink your teeth into — 2024-09-07
• Suitable for sinking one's teeth into — 2020-01-13
• Substantial — 2019-03-30
• Substantive — 2018-12-22
• Substantive — 2018-04-29
• Suitable for sinking one's teeth into — 2018-02-14
• Substantial, as an acting role — 2015-10-26
• Loaded with substance — 2014-01-29
• Full of substance — 2010-03-15
• Substantial — 2009-02-07
• Substantial — 2005-06-05
• Full of substance — 2005-04-27
• Substantive — 1999-01-21
• Substantial — 1998-06-03
• Uninviting to a vegan — 1998-02-18
• Enough to sink one's teeth into — 1997-07-21
• Substantive — 1995-06-13
• Substantial — 1994-01-31