διεορτάζω

A. keep the feast throughout, τὰ Ἴσθμια Th. 8.9, cf. Plu. Pyrrh. 20: plpf. διεωρτάκει D.C. 47.20:—Pass., ταῦτα διεωρτάσθη these festivities were kept, Id. 51.21.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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