φλυαρεῖν
From LSJ
οὕτως καὶ ἡ πίστις, ἐὰν μὴ ἔχῃ ἔργα, νεκρά ἐστιν καθ' ἑαυτήν → so even the Faith, if it does not have deeds, and is on its own, is dead | the Faith without works is dead
Greek > English (Woodhouse Verbs Reversed)
(see also φλυαρέω): chatter, be frivolous, play the fool, talk folly, talk foolishly, talk inanely, talk ineptly, talk nonsense