A History of Short Words

From the New York Times Crossword Puzzle

LEGIT

Fri, 2 Aug '24
For real
Fri, 17 May '24
Not sketchy
Fri, 23 Feb '24
For real
Tue, 30 Jan '24
On the up and up
Fri, 28 Jul '23
Kosher
Mon, 17 Oct '22
For real, colloquially
Wed, 12 Jan '22
On the up and up
Mon, 6 Sep '21
On the up-and-up
Sun, 18 Apr '21
Bona fide