Bury short article that's cruel (7)
I believe the answer is:
inhuman
'cruel' is the definition.
(I've seen this in another clue)
'bury short article' is the wordplay.
I cannot really understand how this works, but
'article' could be 'an' (indefinite article) and 'an' is found within the answer.
This may be the basis of clue (or it may be nonsense).
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for inhuman that I've seen before include "Cruel, barbaric" , "Animal" , "barbarous and brutal" , "Unfeelingly cruel" , "Without compunction" .)