εὐγώνιος
From LSJ
οὔ τι τὰ πολλὰ ἔπη φρονίμην ἀπεφήνατο δόξαν → a multitude of words is no proof of a prudent mind, many words do not declare an understanding heart
English (LSJ)
ον,
A with regular angles, X.Oec.4.21, Arist.Pr.912b15; with perfect angles, four square, of blocks, IG22.1666A64, etc.; right-angled, Gal.18(2).856.