give somebody away

Từ điển Oxford Advanced Learner 8th

▪ I. ˌgive sb aˈway derived
(in a marriage ceremony)to lead the ↑bride to the ↑bridegroom and formally allow her to marry him
•The bride was given away by her father.
Main entry: ↑give_derived
 
▪ II. ˌgive sth/sbaˈway derived
to make known sth that sb wants to keep secret
Syn: ↑betray
• She gave away state secrets to the enemy.
• It was supposed to be a surprise but the children gave the game away.
•His voice gave him away (= showed who he really was).
related noun ↑giveaway
Main entry: ↑give_derived