Exclamation acknowledging a slip-up (4)

I believe the answer is:

oops

(Other definitions for oops that I've seen before include "statement after accident" , "- - -a-daisy" , "Exclamation of making a blunder" , "Exclamation after mistake or minor accident" , "I've messed up" .)

I've seen this clue in The Irish Times.

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