詐欺 （サギ） fraud, swindle, graft, cheating, trick, scam, saying you're going to do something but in the end not doing it, making promises without keeping them

詐欺師 （サギシ） swindler, fraudster, trickster, con man

欺詐 （ギサ） fraud, fraudulence, dupery, hoax

譎詐 （キッサ） falsehood, fabrication, dissimulation

偽る （いつわる） to lie, to cheat, to pretend, to feign, to falsify, to trick, to deceive