Historical clue formulations

• Conforming to accepted values — 2024-02-08
• Fair — 2019-11-28
• On the up and up — 2016-10-13
• Right — 2016-01-02
• Principled — 2015-12-06
• Like straight shooters — 2009-02-20
• The "E" of PETA — 2004-04-13
• Unlikely to cheat — 2001-01-02
• On the square — 2000-08-19
• Upright — 1999-08-01
• Aboveboard — 1997-09-10
• Upright — 1997-04-13
• Kosher — 1994-03-11
• Leading the good life — 1993-11-27