ἐπιγλωσσᾶσθαι
From LSJ
Χαίρειν ἐπ' αἰσχροῖς οὐδέποτε χρὴ πράγμασιν → Non decet in rebus esse laetum turpibus → In schlimmer Not ist Freude niemals angebracht
Greek > English (Woodhouse Verbs Reversed)
(see also: ἐπιγλωσσάομαι, ἐπιγλωσσῶμαι) utter by way of reproach