Crisis antics are anyhow in vain (12)
I believe the answer is:
narcissistic
'vain' is the definition.
(thesaurus)
'crisis antics are anyhow' is the wordplay.
'are anyhow' indicates an anagram.
'crisis'+'antics'='crisisantics'
'crisisantics' is an anagram of 'NARCISSISTIC'.
'in' is the link.
(Other definitions for narcissistic that I've seen before include "Self-loving" , "Egotistical" , "vain" , "Self-regarding" , "Self-centred" .)