Historical clue formulations

• Restrains, as one's emotions — 2021-03-20
• Deadens — 2008-11-30
• Deadens — 2008-08-01
• Muffles — 2007-04-13
• Deadens acoustically — 2005-09-04
• Extinguishes — 2003-05-20
• Moistens — 1999-11-09
• Extinguishes — 1998-09-13
• Deadens — 1996-12-21