Historical clue formulations

• Clumsy — 2020-12-30
• Uncultured — 2019-12-29
• What the museum curator didn't want to be? — 2016-08-02
• Natural — 2008-07-11
• Ingenuous ... or like 17-, 24-, 50- and 60-Across — 2007-06-14
• Lacking guile — 2006-08-07
• Natural — 2006-04-29
• Unaffected — 2005-05-01
• Unaffected — 2005-02-01
• Naive — 2004-08-13
• Naive — 2003-09-07
• Ingenuous — 2001-08-02
• Natural — 2001-06-24
• Unaffected — 2001-01-28
• Unskillful — 1995-11-16
• Unaffected — 1994-06-26