A History of Short Words

From the New York Times Crossword Puzzle

ITSOK

Mon, 2 Dec '24: "No worries"
Sun, 19 May '24: "No worries"
Tue, 14 Feb '23: "No worries"
Thu, 28 Apr '22: "No worries"
Wed, 13 Apr '22: "Don't worry"
Sun, 20 Feb '22: Casual response to an apology
Wed, 29 Dec '21: "Not a problem"
Sun, 30 May '21: "No worries"