A History of Short Words

From the New York Times Crossword Puzzle

SIB

Mon, 29 May '23
Bro or sis
Sat, 15 Apr '23
Fam figure
Sun, 11 Dec '22
Member of the fam
Tue, 8 Nov '22
Bro or sis
Wed, 17 Nov '21
12- or 62-Down
Thu, 18 Mar '21
Close relative, briefly