Some bloodlust in Yorkshire negligible (4)
I believe the answer is:
tiny
'negligible' is the definition.
(I've seen this in another clue)
'some bloodlust in yorkshire' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'TINY' is hidden in the letters of 'bloodlust in yorkshire'.
(Other definitions for tiny that I've seen before include "Wee" , "Minute, diminutive" , "Minuscule" , "- - Tim (Dickens)" , "Diminutive; small" .)