σκληροτράχηλος G4644
sklērotráchēlos · sklay-rot-rakh'-ay-los · Adjective
from σκληρός and τράχηλος; hardnaped, i.e. (figuratively) obstinate:--stiffnecked.
1 Occurrence in the King James Bible
Acts 7:51Ye stiffnecked and uncircumcised in heart and ears, ye do always resist the Holy Ghost: as your fathers did, so do ye.