奸诈 | jiān zhà | treachery / devious / a rogue | |
背信弃义 | bèi xìn qì yì | breaking faith and abandoning right (idiom) / to betray / treachery / perfidy | |
尔虞我诈 | ěr yú wǒ zhà | lit. you hoodwink me and I cheat you (idiom) / fig. each tries to outwit the other / deceit and treachery |