Hostility (10)
There are a few possibilities for this:
'hostility' is the definition.
(I know that animus is a type of hostility)
This is all the clue.
(Other definitions for animus that I've seen before include "Hostile feeling" , "Hostile spirit in speech or action" , "Hostility shown in speech or action" , "Feeling of strong dislike" , "A feeling of ill will or hostility" .)
'hostility' is the definition.
(I know that hostility can be written as enmity)
This is all the clue.
(Other definitions for enmity that I've seen before include "Hostility between opposing people or countries" , "Hostility, ill-will" , "Hate; aversion" , "Hostility between opposing groups or nations" , "State of deep-seated ill-will" .)
'hostility' is the definition.
(synonyms)
This is all the clue.
(Other definitions for ill-will that I've seen before include "Hostility" , "Enmity" .)
'hostility' is the definition.
(short for aggression or aggravation)
This is the entire clue.
(Other definitions for aggro that I've seen before include "belligerent troublemaking" , "Hostile troublemaking" , "Bovver!" , "In slang, hassle or troublemaking" , "Attacking behaviour" .)
'hostility' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for opposition that I've seen before include "Resistance, dissent" , "obstruction" , "Enemy" , "parliamentary group" , "those out of power" .)
'hostility' is the definition.
(I know that aggression is a type of hostility)
This is all the clue.
(Other definitions for aggression that I've seen before include "Use of armed force" , "What eleven Ac displays" , "Act of aggression,physical force" , "warlike attitude" , "Act of hostility" .)
'hostility' is the definition.
(I know that antagonism is a type of hostility)
This is the entire clue.
(Other definitions for antagonism that I've seen before include "Active opposition" , "Active hostility" .)