G0656–ἀποσυνάγωγος–aposunagōgos

Such was their answer, because they were afraid of the Jews; for the Jews had already settled among themselves that if any one should acknowledge Jesus as the Christ, he should be excluded from the synagogue.

ἀποσυνάγωγος aposunagōgos “expelled from the synagogue”

Nevertheless even from among the Rulers many believed in Him. But because of the Pharisees they did not avow their belief, for fear they should be shut out from the synagogue.

ἀποσυνάγωγοι aposunagōgoi “put out of the synagogue”

You will be excluded from the synagogues; nay more, the time is coming when any one who has murdered one of you will suppose he is offering service to God.

ἀποσυναγώγους aposunagōgous “Out of the synagogues”