G4910–συνευωχέομαι–suneuōcheomai

For the evil which overtakes them is the reward of their evil-doing: such men take their pleasure in the delights of the flesh even in the daytime; they are like the marks of a disease, like poisoned wounds among you, feasting together with you in joy;

συνευωχούμενοι suneuōchoumenoi “feasting with”

These men are unseen rocks at your love-feasts, when they take part in them with you, keepers of sheep who without fear take the food of the sheep; clouds without water rushing before the wind, wasted trees without fruit, twice dead, pulled up by the roo

συνευωχούμενοι, suneuōchoumenoi “feasting together [with you]”