A History of Short Words

From the New York Times Crossword Puzzle

IDK

Wed, 5 Mar '25
Texter's "you tell me"
Mon, 21 Oct '24
"No clue," in text shorthand
Sun, 13 Oct '24
Texter's shrug
Tue, 2 Apr '24
"Beats me," in brief
Sun, 7 Jan '24
"No idea," in a text
Thu, 28 Sep '23
Texter's indication of uncertainty
Wed, 22 Sep '21
"Beats me," in textspeak