Historical clue formulations

• Withdrawn, in a way — 2022-07-08
• Preferring one's own company, perhaps — 2021-08-22
• Not mixing well? — 2013-05-26
• Not mixing well — 2010-04-24
• Not good at schmoozing — 2001-06-12
• Not gregarious — 2000-03-21
• Not much for mixing — 1997-11-18
• Opposite of gregarious — 1997-05-17
• Not given to schmoozing — 1995-08-29