Historical clue formulations

• Old-school term for "cool" — 2026-07-21
• Cool, old-style — 2026-03-01
• No-longer-cool way to say "cool" — 2025-06-16
• With it, in last-century slang — 2025-01-13
• With it, in old slang — 2024-07-17
• In, in the past — 2024-03-08
• With it — 2024-03-02
• Cool, in old lingo — 2024-02-17
• Cool, back in the day — 2024-01-07
• "Cool" that's no longer cool — 2023-11-05
• Old-school cool — 2023-04-07
• With it, in old slang — 2021-12-26
• With it, in old slang — 2021-06-09
• Old-fashioned "cool" — 2021-03-07
• Not square, once — 2020-11-13
• Like the latest, in the past — 2020-09-19
• Cool, in old slang — 2020-09-06
• Cool, in an uncool way — 2020-04-19
• Cool, in dated slang — 2019-02-20
• Cool, to a jive talker — 2018-09-25
• Au courant, once — 2017-09-10
• It was cool in the '40s — 2017-08-26
• Cool, in the '40s — 2017-08-06
• With it, man — 2017-05-12
• Like a zoot-suiter — 2016-10-12
• Cool, in jive talk — 2015-11-17
• What was cool in the '50s? — 2013-08-01
• Not square — 2013-05-08
• Cool, in old slang — 2012-05-28
• Up on things, in the '40s — 2012-02-07
• Like '40s boppers — 2012-02-04
• Cool, '50s-style — 2012-01-10
• Cool, once — 2011-09-24
• Like a cool cat — 2010-11-09
• In the know, in old slang — 2010-05-30
• In the know, old-style — 2010-05-12
• Tuned in — 2010-04-03
• Up on things, daddy-o — 2009-08-27
• Like many a 21-Down — 2009-07-19
• Viral inflammation, informally — 2009-01-15
• Cool, in the '40s — 2009-01-12
• Zoot-suited, say — 2008-12-20
• Not squaresville — 2008-05-09
• Clued in, once — 2008-03-07
• Cool, to a cat — 2008-02-05
• With it, once — 2007-12-11
• Plugged in — 2007-06-30
• With it, once — 2006-04-09
• Not squaresville — 2005-05-25
• Cool, once — 2005-01-06