A History of Short Words

From the New York Times Crossword Puzzle

TEM

Sun, 17 Mar '24
Pro ___ (for now)
Thu, 6 Jul '23
Pro___ (for now)
Wed, 14 Jun '23
President pro ___
Wed, 31 May '23
President pro ___
Thu, 13 Apr '23
Pro ___
Mon, 13 Feb '23
President pro ___
Sat, 28 May '22
Pro follower
Tue, 20 Jul '21
President pro ___
Tue, 6 Jul '21
President pro ___