ἀνεπίστρεπτος
From LSJ
ἄπαγ' ἐς μακαρίαν ἐκποδών → get lost, buzz off, on yer bike, bug off, bugger off, clear out, clear off, take a hike, beat it, scram, get out of here, get outta here
English (LSJ)
ον, prop.
A without turning round: hence metaph., indifferent, heedless, πάντων Phld.Herc. 1251.17, cf. Artem. 2.37. Adv. -τως Arr.Epict.2.9.4, PMag.Par.1.45: also -τεί or -τί Ph.1.90 (-τί), Plu.2.46e, 418b, PMag.Lond.121.439.