Altar avowal
I believe the answer is:
ido
(Other definitions for ido that I've seen before include "Artificial language" , "Wedding promise" , "Wedding response" , "Marriage response" , "Wedding vow" .)
I believe the answer is:
ido
(Other definitions for ido that I've seen before include "Artificial language" , "Wedding promise" , "Wedding response" , "Marriage response" , "Wedding vow" .)