Historical clue formulations

• They aren't party people — 2025-12-05
• Solo sorts — 2025-09-27
• Ones practicing social distancing — 2021-02-06
• Brooding sorts — 2019-03-04
• Solitary sorts — 2018-03-05
• Solitudinarians — 2017-04-23
• Recluses — 2014-01-19
• People who avoid social networking, maybe — 2012-05-13
• Anchorites — 2011-11-24
• Recluses — 2009-11-30
• Eremites — 2008-01-06
• Introverts — 2004-03-12
• Antisocial types — 1999-09-14
• Introverts — 1999-01-31
• Hardly partygoers — 1995-02-12
• Introverts — 1994-11-13