Berean Standard Bible (BSB)
For they were all so terrified that Peter did not know what else to say.
World English Bible (WEB)
For he didn’t know what to say, for they were very afraid.
Strong's King James
For{G1063} he wist{G1492}{(G5715)} not{G3756} what{G5101} to say{G2980}{(G5661)}; for{G1063} they were sore{G2258}{(G5713)} afraid{G1630}.
The F.O.G *
(6) Because he didn't know what to answer, for they were terrified!
The F.O.G Message *
Young's Literal Translation
for he was not knowing what he might say, for they were greatly afraid.