This clue appeared in the NYT Crossword on Sunday, March 8, 2026 (120 Down). The answer is hidden below until you want it. Sunday puzzles are large (21 by 21) and themed, about as hard as a Wednesday or Thursday.
Answer length: 4 squares
First letter
U _ _ _
First and last letters
U _ _ O
Show the answer
About the answer
UNDO as a word: To reverse the effects of an action; (computing) An operation that reverses a previous action.
UNDO has been an answer 7 times in the NYT Crossword and Mini since October 23, 2025.
Other clues with the same answer
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