παμπληθεί G3826
pamplētheí · pam-play-thi' · Adverb
dative case (adverb) of a compound of πᾶς and πλῆθος; in full multitude, i.e. concertedly or simultaneously:--all at once.
1 Occurrence in the King James Bible
Luke 23:18And they cried out all at once, saying, Away with this man, and release unto us Barabbas: