ārakatta

warding off, keeping away, holding aloof, being far from (c. gen.); occurring only in pop. etym. of arahant at AN.iv.145; Dhp-a.iv.228; DN-a.i.146 = Vv-a.105, Vv-a.106 = Pv-a.7; cp. Dhs-a.349.

*ārakāt + tvaṃ