"Slip up" NYT crossword answer is:ERR (3 letters length)
The answer for "Slip up" crossword clue is listed above to help you solve the puzzle you are currently working on.
The slip up crossword clue NYT (December 25 2023) is "blunder," which is defined as a mistake or error made in a plan or course of action. This clue is often used in crosswords to describe a misstep or misjudgment that someone has made. It can also refer to a mistake made in a speech or conversation. In either case, it is an indication that someone has not been careful or has made a mistake.