Prevent, as a crisis (5)
I believe the answer is:
avert
(Other definitions for avert that I've seen before include "With prominent incisors" , "Prevent, ward off" , "Stop" , "Prevent from occurring" , "Fend off" .)
I believe the answer is:
avert
(Other definitions for avert that I've seen before include "With prominent incisors" , "Prevent, ward off" , "Stop" , "Prevent from occurring" , "Fend off" .)