[1] From the verb ἐγκαταζεύγνυμι : aorist active participle, masculine singular nominative. The simple verb ζεύγνυμι is preceded by two preverbs, the prepositions ἐν and κατα . According to LSJ, the quotation which follows is the only place in the Greek literature it spans that this verb appears.
[2] Sophocles, Ajax 736 (the words of the messenger to the Chorus: see web address 1) with scholion.