= Synagoge epsilon390, Photius epsilon841. See also e.g. Hesychius epsilon2760 (with the present synonym and two others, a)dialei/ptws and e)pimo/nws) and sigma2577, which uses the current headword as one of three glosses for the current gloss.
The headword is an adverb derived from the adjective e)ndelexh=s (cf. also epsilon 1158). It is presumably quoted from somewhere; perhaps from the Septuagint (so Latte), where it occurs at Exodus 29:38 and in twelve other passages, though there are numerous other possibilities (beginning with Euripides, Critias, Xenophon and Plato).