Mean spirited type might need organ replaced (3,2,3,6)
I believe the answer is:
dog in the manger
'mean spirited type' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'might need organ replaced' is the wordplay.
'replaced' is an anagram indicator.
'might'+'need'+'organ'='mightneedorgan'
'mightneedorgan' is an anagram of 'DOG-IN-THE-MANGER'.
Can you help me to learn more?
(Other definitions for dog in the manger that I've seen before include "Selfish person" , "One not letting others use what they themselves have no use for" , "selfish hoarder" , "Spoilsport" , "that could disrupt nativity play" .)