Lewis & Short

sȳcŏphantor (sūc-), āri, v. dep. n. [id.], to play the rogue, to deceive, trick, cheat (Plautinian): ego nunc sucophantae huic sucophantari volo, I have a mind to trick this trickster, Plaut. Trin. 4, 2, 116: hoc me sucophantari pudet, id. ib. 3, 3, 58.