Undue rush (5)

I believe the answer is:

haste

(Other definitions for haste that I've seen before include "Speediness or rush" , "Hurriedness" , "''Marry in . . . . ., repent at leisure''" , "Urgent hurry" , "impetuosity" .)

I've seen this clue in the Newsday.com and the King Feature Syndicate.

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