A History of Short Words

From the New York Times Crossword Puzzle

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Sun, 4 Feb '24
Liberated
Fri, 10 Nov '23
Available
Fri, 6 Oct '23
Sign on a sofa in the front yard, maybe
Mon, 19 Jun '23
On the house
Wed, 14 Jun '23
Not doing anything
Sat, 13 May '23
Priceless?
Fri, 30 Dec '22
Not doing anything
Sat, 1 Oct '22
Unfettered
Fri, 30 Sep '22
Not busy
Mon, 16 May '22
Middle square on a bingo card
Mon, 23 Aug '21
Gratis
Wed, 28 Jul '21
Unoccupied