סָרַר
From LSJ
Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)
a primitive root; to turn away, i.e. (morally) be refractory: X away, backsliding, rebellious, revolter(-ing), slide back, stubborn, withdrew.