ματαιόω
From LSJ
αἰτήσεις ἀκοὐεις σῶν ἱκετῶν· ταχἐως συνδραμεῖς ἀναπαὐων εὐεργετῶν· ἰάματα παρἐχεις, Ἱερἀρχα, τῇ πρὀς Θεὀν παρρησἰᾳ κοσμοὐμενος → You hear the prayers of your suppliants; quickly you come to their assistance, bringing relief and benefits; you provide the remedies, Archbishop, since you are endowed with free access to God.
English (LSJ)
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.
Greek (Liddell-Scott)
ματαιόω: ἴδε ματαιόομαι.