μαραίνομαι

From LSJ

καὶ λέγων ὅτι Πεπλήρωται ὁ καιρὸς καὶ ἤγγικεν ἡ βασιλεία τοῦ θεοῦ· μετανοεῖτε καὶ πιστεύετε ἐν τῷ εὐαγγελίῳ → declaring “The time has been accomplished and the kingdom of God is near: start repenting and believing in the gospel!” (Μark 1:15)

Source

English (Autenrieth)

ipf. ἐμαραίνετο, aor. ἐμαράνθη: of fire, die gradually away. (Il.)