εὑρύς
μή μοι θεοὺς καλοῦσα βουλεύου κακῶς· πειθαρχία γάρ ἐστι τῆς εὐπραξίας μήτηρ, γυνὴ Σωτῆρος· ὦδ᾽ ἔχει λόγος → When you invoke the gods, do not be ill-advised. For Obedience is the mother of Success, wife of Salvation—as the saying goes.
Frisk Etymological English
Grammatical information: adj.
Meaning: broad, wide (Il.).
Other forms: ep. acc. also -έα (under formulaic pressure)
Compounds: Very often as 1. member .
Derivatives: εὑρύτης broadness, width (Hp.) and denomin. εὑρύνω make broad, wide (θ 260; on the formation Schwyzer 733). - Also εὖρος n. breadth, width (λ 312), as 2. member in ἰσο-ευρής with the same breadth (Phot.).
Origin: IE [Indo-European] [1165] *h₁u̯rH-u-? broad
Etymology: From Skt. urú-, Av. vouru- broad, Skt. váras- n. breadth; εὑρύς and εὖρος differ only in anlaut. We have to start from IE *u̯rHú-s, *u̯érH-os-, which should have given Gr. *Ϝαρύς, *Ϝέρος; cf. βαρύς = Skt. gurú-, Av. gouru-. One assumes that εὑρύς has a prothetic *ἐ-Ϝρύ-ς (cf. Av. uru- in urv-āp- with broad water from *u̯rHu-), but then one expects *ἐϜ(α)ρυς < h₁u̯r(H)us; or that it stands with metathesis for a secondary full grade *Ϝερύς (after the primary comparative, Skt. várī-yān broader); also εὖρος beside Skt. váras- could be so explained, if not secondary after εὑρύς (cf. βάρος, βάθος, τάχος etc.). Unclear is the proto-form of Toch. A wärts, B aurtse broad (-ts(e) suffixal). - S. Schwyzer 412 n. 1; s. also 224 n. 2 and Fraenkel IF 50, 11.