Historical clue formulations

• Watery, as tea — 2024-04-16
• Like a bad signal — 2021-04-09
• Not very convincing — 2021-02-07
• Diluted — 2020-01-01
• Watered down, as coffee — 2018-07-02
• Watery, say — 2015-11-26
• Diluted — 2015-08-14
• Watered down — 2014-08-20
• Unconvincing — 2014-08-17
• Unsound, as an argument — 2013-10-06
• Impotent — 2010-09-04
• Watered down — 2010-02-21
• Wimpy — 2007-01-23
• Lacking muscle — 2004-09-20
• Unconvincing, as an argument — 2003-11-17
• Unlike Charles Atlas — 2002-01-15
• Watered-down — 1998-08-17
• Lacking strength — 1997-11-03
• Watery — 1997-04-08
• Implausible — 1997-01-25
• Frangible — 1994-01-09