Kelly kept opening wiped out (7)
I believe the answer is:
negated
'wiped out' is the definition.
Although both the answer and definition are past participle verbs, I don't see how one could define the other.
'kelly kept opening' is the wordplay.
'kelly' becomes 'ned' (outlaw Ned Kelly).
'kept' is an insertion indicator.
'opening' becomes 'gate' (I have seen 'Movable opening ' mean 'gate' so perhaps 'opening' could also mean 'gate').
'ned' enclosing 'gate' is 'NEGATED'.
Can you help me to learn more?
(Other definitions for negated that I've seen before include "Nullified" , "Cancelled or destroyed the effect of something" , "Contradicted" , "Discredited" , "Denied" .)