Hold your horses dismissing household? I beg your pardon! (5)

I believe the answer is:

sorry

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'i beg your pardon' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for sorry that I've seen before include "I beg your pardon" , "Feeling regret" , "Word of apology" , "My apologies!" , "Rueful" .)

I've seen this clue in the Irish Times.

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