Ill-tempered dog (3)

I believe the answer is:

cur

'ill-tempered dog' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for cur that I've seen before include "Mongrel - cowardly person" , "Wretch" , "Mongrel - coward" , "Mongrel; rascal" , "Scoundrel; mongrel dog" .)

I've seen this clue in the Universal and the New York Times.

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