Virginia George to sign for erratic impulses (8)
I believe the answer is:
vagaries
'erratic impulses' is the definition.
'vagaries' can be an answer for 'impulses' ('vagary' can be a synonym of 'impulse'). I am not sure about the 'erratic' bit.
'virginia george to sign' is the wordplay.
'virginia' becomes 'va' (US state abbreviation).
'george' becomes 'g'.
'to sign' becomes 'Aries' (star sign).
'va'+'g'+'aries'='VAGARIES'
'for' is the link.
Can you help me to learn more?
(Other definitions for vagaries that I've seen before include "unpredictable changes" , "Whims" , "Capricious acts or ideas" , "uncertainties" , "Unpredictable occurrences" .)