A History of Short Words

From the New York Times Crossword Puzzle

ACH

Tue, 26 Apr '22
German interjection
Wed, 22 Dec '21
"___ Tannenbaum" (16th-century folk song that inspired a carol)
Tue, 29 Jun '21
German cry
Sun, 2 May '21
"Darn!," in Dortmund