Showing malice (8)
I believe the answer is:
spiteful
'showing malice' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for spiteful that I've seen before include "Vengeful, malicious" , "nasty!" , "Showing malice" , "Malevolent, wanting to hurt" , "Vindictive - malicious" .)