A History of Short Words

From the New York Times Crossword Puzzle

OBTUSE

Mon, 1 Apr '24
Like an angle between 90° and 180°
Mon, 28 Aug '23
More than 90°
Wed, 20 Apr '22
More than right
Wed, 24 Nov '21
More than right ... or seldom correct?
Fri, 1 Jan '21
Thickheaded