ἐπάναγκες G1876
epánankes · ep-an'-ang-kes · Adjective Neuter
neuter of a presumed compound of ἐπί and ἀνάγκη; (adverbially) on necessity, i.e. necessarily:--necessary.
1 Occurrence in the King James Bible
Acts 15:28For it seemed good to the Holy Ghost, and to us, to lay upon you no greater burden than these necessary things;