A.bring to naught, Sch.S.Tr.258, Gloss.
2. ματαιοῦσιν ἑαυτοῖς ὅρασιν invent a vision of their own, LXX Je.23.16.
II. more freq. in Pass., to be brought to naught, οὐ ματαιωθήσεται τὰ ῥήματα ib.Ju.6.4.
2. become foolish, act foolishly, ἐματαιώθην σφόδρα ib.1 Ch.21.8, cf. Ep.Rom.1.21; μεματαίωταί σοι thou hast done foolishly, LXX 1 Ki.13.13.