Historical clue formulations

• Without charge — 2026-09-21
• Not busy — 2026-09-10
• Like something no money can buy — 2026-05-09
• Out of joint? — 2026-01-23
• Like samples — 2025-11-28
• On the house — 2025-10-27
• Unoccupied — 2025-03-10
• Gratis — 2024-11-19
• Liberated — 2024-02-04
• Available — 2023-11-10
• Sign on a sofa in the front yard, maybe — 2023-10-06
• On the house — 2023-06-19
• Not doing anything — 2023-06-14
• Priceless? — 2023-05-13
• Not doing anything — 2022-12-30
• Unfettered — 2022-10-01
• Not busy — 2022-09-30
• Middle square on a bingo card — 2022-05-16
• Gratis — 2021-08-23
• Unoccupied — 2021-07-28
• Liberate — 2020-09-30
• At no cost — 2020-09-14
• Like tap water in a restaurant — 2020-05-10
• Advertising claim that usually has a catch — 2019-08-04
• Let go — 2019-07-11
• Complimentary — 2019-05-27
• Bingo card's middle square — 2019-03-04
• Gratis — 2018-06-25
• They say there's no such thing as this kind of lunch — 2018-03-19
• Partner of 5-Across — 2018-03-16
• Bingo square — 2017-08-27
• For the taking — 2017-06-30
• Not in use — 2016-10-13
• Advertising buzzword — 2016-07-24
• Unoccupied — 2016-03-13
• Unjammed — 2015-02-08
• Not occupied — 2014-12-26
• Not taken — 2014-11-01
• - — 2014-10-09
• Like the initial letters of the answers to the six starred clues, on "Wheel of Fortune" — 2014-08-20
• Craigslist section — 2014-06-28
• See 49-Down — 2013-12-13
• Not busy — 2013-11-20
• Center square of a bingo card — 2013-11-18
• Unoccupied — 2013-11-01
• Word on a bingo card — 2013-04-05
• Available — 2011-04-15
• For the taking — 2011-03-08
• Unattached — 2011-01-05
• Open — 2010-12-11