Thayer's
STRONGS NT 3758: οὐάοὐά,
Tdf. οὐά (see Proleg., p. 101; cf.
Chandler § 892), "Ah! Ha!" an interjection of wonder and amazement:
Epictetus diss. 3, 22, 34; 3, 23, 24;
Dio Cassius, 63, 20; called out by the overthrow of a boastful adversary,
Mark 15:29.