Historical clue formulations

• On the level — 2026-01-23
• Upright — 2022-09-09
• "I kid you not!" — 2022-08-07
• "No lie!" — 2020-09-07
• "No lie!" — 2019-10-30
• Straight — 2017-06-18
• "I kid you not!" — 2016-04-25
• Level — 2016-02-04
• "It's true!" — 2015-04-06
• "Trust me!" — 2014-09-23
• Unlike Iago — 2013-07-12
• "I swear!" — 2011-03-16
• "I swear!" — 2010-07-22
• "Really and truly" — 2009-06-29
• Like some opinions — 2009-05-29
• Square — 2008-09-25
• "No fooling!" — 2008-02-06
• "No lie" — 2006-07-07
• "Really!" — 2006-05-24
• "No kidding!" — 2006-03-01
• "Really!" — 2004-06-09
• "I kid you not!" — 2004-05-14
• Frank — 2003-11-15
• "I swear!" — 2003-07-08
• Upright — 2002-01-09
• Like Abe — 2001-12-18
• "You can believe me!" — 1999-09-08
• "I'm telling you the truth!" — 1997-08-04
• "I swear!" — 1997-07-23
• Upright — 1996-11-30
• Square — 1996-04-14
• Fair and square — 1996-03-28
• Square — 1995-12-31
• "It's true!" — 1995-12-14
• Genuine — 1995-01-26
• "That's the truth!" — 1994-11-16
• "I'm telling the truth!" — 1994-08-22
• With 33-Down, Presidential epithet — 1994-06-25