ἀτείχιστος

ον, Adv.
A. unwalled, unfortified, Th. 1.2, 8.62, Lys. 33.7: metaph., χάριν θανάτου πάντες ἄνθρωποι πόλιν ἀ. οἰκοῦμεν Epicur. Sent. Vat. 31. Adv. ‐τως Sm. Za. 2.4(8); ἀ. τετειχισμένοι, of Brahmans living in the open air, Philostr. VA 3.15, 6.11.
2. not walled off, Th. 1.64.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project