Uncontrollable emotion this year erupting (8)
I believe the answer is:
hysteria
'uncontrollable emotion' is the definition.
(I've seen this before)
'this year erupting' is the wordplay.
'erupting' indicates anagramming the letters.
'this'+'year'='thisyear'
'thisyear' anagrammed gives 'HYSTERIA'.
(Other definitions for hysteria that I've seen before include "Psychoneurotic condition" , "State of violent mental agitation" , "Wild emotionalism" , "craze" , "Uncontrollable excitement" .)