| disingenuity(cunning, craftiness, wiles) |
| disloyalty(noun, deception, dishonesty, treachery, deceit) |
| doubt(treachery, deceit, disloyalty) |
| dualism(deception, division, dishonesty, deceit, falsehood) |
| duality(deception, division, dishonesty, deceit, falsehood) |
| false-heartedness(treachery, deceit, disloyalty) |
| falsehood(deception, division, dishonesty, deceit, artifice) |
| falsity(treachery, deceit, disloyalty) |
| feint(deception, dishonesty, treachery) |
| fickleness(treachery, deceit, disloyalty) |
| fiddle(cheat, trick, swindle, con, scam) |
| fling(deception, fraud, mischief) |
| flirtation(deception, fraud, fling, mischief) |
| fooling around(expression, deception, fraud, fling, mischief) |
| fourberie(deception, fraud, fling, mischief) |
| foxiness(cunning, craftiness, wiles) |
| funny business(noun, expression, deception, fraud, fling) |
| game(swindle, con, scam) |
| graft(swindle, con, scam) |
| hankie-pankie(deception, fraud, fling, mischief) |