Given the heads-up (7)
I believe the answer is:
alerted
(Other definitions for alerted that I've seen before include "Warned, made aware" , "Given signal" , "Put on guard, forewarned" , "Put on guard, raised the alarm" , "Put on guard, warned" .)
I believe the answer is:
alerted
(Other definitions for alerted that I've seen before include "Warned, made aware" , "Given signal" , "Put on guard, forewarned" , "Put on guard, raised the alarm" , "Put on guard, warned" .)