Historical clue formulations

• Bit of a sting, perhaps — 2023-03-24
• The hate in hate mail — 2022-12-14
• Nasty words — 2020-03-22
• Snake poison — 2018-12-24
• Dangerous injection — 2018-06-17
• Content of hate mail — 2015-07-15
• Snake poison — 2014-09-02
• Poison — 2012-04-10
• Nasty words — 2009-08-16
• Black mamba's secretion — 2009-01-06
• What a fang ejects — 2007-05-28
• Gila monster's defense — 2007-02-15
• Maliciousness — 2000-01-28
• Toxic stuff — 1999-03-04
• Hate — 1998-10-17
• Copperhead's weapon — 1998-05-26
• Snake spit — 1997-08-13
• Hardly sweet talk — 1997-03-07
• Mean words — 1996-08-18
• Ill will — 1996-06-14
• Malice — 1996-02-14