ἐπιστρεπτέον

A. one must turn back, πάλιν, in a speech, Aristid. 1.99J.; εἰς ὑγιεινὴν δίαιταν Sor. 1.98.
II. . c. gen., account must be taken of, Phld. Mort. 32.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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