ἐπιδιατρίβω

A. spend time on, χρόνον τῇ γεύσει Thphr. Od. 11; spend, ἡμέρας τρεῖς J. AJ 11.5.2, cf.Hdn. 2.11.1; ἐπιδιατρίψας dwelling on it, Arist. Mete. 371a23.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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