Historical clue formulations

• Cloud up — 2026-04-25
• Discombobulate — 2019-02-03
• Obfuscate — 2015-08-28
• Muddle — 2014-02-01
• Opposite of clarify — 2010-01-22
• Cloud up — 2007-07-26
• Confuse — 2004-04-03
• Obscure — 2004-02-16
• Blur — 2000-10-20
• Obscure — 1997-01-20
• Obscure — 1996-02-14