A History of Short Words

From the New York Times Crossword Puzzle

SISI

Sun, 7 Jul '24
Enthusiastic Spanish assent
Sun, 16 Jun '24
Nickname for Empress Elisabeth of Austria
Sat, 2 Dec '23
"Ciertamente!"
Sun, 4 Dec '22
Avid assent in Acapulco
Sat, 29 Oct '22
Enthusiastic assent abroad
Sun, 28 Nov '21
Not a "no no"
Tue, 16 Nov '21
Enthusiastic Spanish approval
Thu, 7 Oct '21
Enthusiastic assent in Spanish
Thu, 17 Jun '21
Enthusiastic Spanish assent