Historical clue formulations

• Tight-lipped — 2025-04-15
• Close-lipped — 2025-03-22
• It's the word — 2025-01-18
• The word, in a saying — 2024-04-15
• Keep ___ — 2023-08-27
• Closemouthed — 2023-03-27
• It's "the word" — 2022-01-18
• Shh ... it's the word! — 2021-01-20
• Closemouthed — 2020-04-21
• Silent — 2019-11-10
• Quiet — 2019-01-26
• Queen ___ — 2018-03-24
• Closemouthed — 2018-02-06
• Mother's Day flower, in Australia — 2017-12-06
• Closemouthed — 2017-09-03
• Tight-lipped — 2016-12-25
• Closemouthed — 2016-05-11
• Tight-lipped — 2015-11-10
• Quiet — 2015-04-29
• On the q.t. — 2014-06-28
• It's "the word" — 2011-11-01
• Not saying a thing — 2011-03-14
• Not talking — 2009-11-03
• Tight-lipped — 2009-07-28
• "The word" — 2009-07-15
• Clammed up — 2007-08-25
• Closemouthed — 2007-05-27
• Buttoned up — 2006-04-14
• Queen ___ — 2006-01-01
• Closemouthed — 2005-04-11
• Silent — 2004-05-24
• Not telling — 2003-01-15
• England's Queen ___ — 2002-02-06
• Queen ___ — 2001-08-17
• Britain's Queen ___ — 2001-03-25
• Big bloom — 2000-07-16
• Tight-lipped — 2000-06-22
• Closemouthed — 1999-09-29
• Uncommunicative — 1998-05-15
• Saying nothing — 1998-01-25
• Member of a British family — 1997-06-07
• Mother's flower? — 1994-11-02