A History of Short Words

From the New York Times Crossword Puzzle

REG

Wed, 2 Apr '25
Issuance from a govt. agency
Wed, 27 Nov '24
Pump selection: Abbr.
Sun, 1 Sep '24
On the ___ (often, informally)
Sat, 5 Aug '23
Rule, informally
Sun, 2 Oct '22
Rule, informally
Thu, 28 Oct '21
On the ___ (frequently, in modern slang)