Historical clue formulations

• Barely get wet? — 2022-05-29
• Lose the suit, say — 2021-12-22
• Bathe in the buff — 2016-09-05
• *Go swimming in one's birthday suit — 2014-12-15
• Be unsuited? — 2014-10-09
• Go in without a suit — 2009-11-09
• Swim naturally? — 2006-03-15