Solemn assurance (7)
I believe the answer is:
promise
(Other definitions for promise that I've seen before include "Give an undertaking" , "Pledge - my word!" , "Vow" , "Assurance" , "Betroth" .)
I believe the answer is:
promise
(Other definitions for promise that I've seen before include "Give an undertaking" , "Pledge - my word!" , "Vow" , "Assurance" , "Betroth" .)