Historical clue formulations

• Nix — 2025-05-31
• Full stop — 2024-03-20
• Put an end to — 2016-07-02
• Stopper of things — 2009-02-04
• Unwelcome end, with "the" — 2008-05-08
• Squelch — 2007-06-30
• Stopper, informally — 2003-05-21
• Unwelcome end, with "the" — 1997-07-05