Fend off (5)
'fend off' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for repel that I've seen before include "'Drive back, repulse (5)'" , "See off" , "Nauseate" , "Drive away or disgust" , "Put off - disgust" .)
'fend off' is the definition.
(synonyms)
This is all the clue.
(Other definitions for avert that I've seen before include "Parry" , "Turn aside, prevent" , "Turn away from, say gaze" , "Stop" , "Ward off (bad event)" .)