A History of Short Words

From the New York Times Crossword Puzzle

PDA

Sat, 20 Nov '21
Exhibition that might attract eye rolls, for short
Tue, 5 Oct '21
Show of love, for short?
Fri, 25 Jun '21
Activity common in nightclubs, in brief
Thu, 10 Jun '21
Reason to avert one's eyes, for short
Sun, 7 Mar '21
What a third wheel might see, in brief