ἀκριβέστατος G196
akribéstatos · ak-ree-bes'-ta-tos · Adjective
superlative of (a derivative of the same as ἄκρον); most exact:--most straitest.
1 Occurrence in the King James Bible
Acts 26:5Which knew me from the beginning, if they would testify, that after the most straitest sect of our religion I lived a Pharisee.