syncheō

(Translation from NRSV with a few modifications for a more literal meaning)

Acts

2: 6	And at this sound the crowd gathered and was confounded (syncheō), because each one heard them speaking in the native language of each.
9: 22	Saul became increasingly more powerful and confounded (syncheō) the Jews who lived in Damascus by proving that Jesus was the Messiah.
19: 32	Meanwhile, some were shouting one thing, some another; for the assembly was confounded (syncheō), and most of them did not know why they had come together.
21: 27	When the seven days were almost completed, the Jews from Asia, who had seen him in the temple, stirred up (syncheō) the whole crowd. They seized him,
21: 31	While they were trying to kill him, word came to the tribune of the cohort that all Jerusalem was stirred up (syncheō).