Alert urgently (4)
I believe the answer is:
warn
(Other definitions for warn that I've seen before include "Sound the alarm" , "Alert" , "Give advance notice to" , "Notify of potential risk" , "Advise" .)
I believe the answer is:
warn
(Other definitions for warn that I've seen before include "Sound the alarm" , "Alert" , "Give advance notice to" , "Notify of potential risk" , "Advise" .)