To Wish You Hadn’t Done or Said Something
Puzzle 20 of Christmas Carols Piece of Cake Pack
Question is: To Wish You Hadn’t Done or Said Something
and the answer is: REGRET
Word Meaning:
REGRET — To feel sorry about (a thing that has or has not happened), afterthink: to wish that a thing had not happened, that something else had happened instead.
Definitions from Wiktionary.