Some paralytic or effectively keeled over showing savagery (8)
I believe the answer is:
ferocity
'savagery' is the definition.
(I've seen this before)
'some paralytic or effectively keeled over' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'keeled over' says the letters should be written backwards.
'yticoref' can be found hidden inside 'paralytic or effectively'.
'yticoref' reversed gives 'FEROCITY'.
'showing' acts as a link.
(Other definitions for ferocity that I've seen before include "Wild savagery" , "Savagery, fierceness" , "Savageness" , "State of savagery and violence" , "Unrestrained and cruel savagery" .)