μισθαρνεῖν
From LSJ
προσέχετε ἀπὸ τῶν ψευδοπροφητῶν οἵτινες ἔρχονται πρὸς ὑμᾶς ἐν ἐνδύμασιν προβάτων ἔσωθεν δέ εἰσίν λύκοι ἅρπαγες → beware of the false prophets, who come to you in sheep's clothing, and inwardly are ravening wolves
Greek > English (Woodhouse Verbs Reversed)
(see also μισθαρνέω): be a hireling, earn wages, work for hire