Janus
Machiavellianism
ambidexterity
ambiguity
ambivalence
artfulness
artifice
bad faith
biformity
bifurcation
conjugation
craft
cunning
deceit
deceitfulness
deception
dichotomy
dirty pool
dirty trick
dirty work
dishonesty
dissemblance
dissimulation
double dealing
double-dealing
doubleness
doubleness of heart
doublethink
doubling
dualism
duality
duplexity
duplication
equivocality
faithlessness
falseheartedness
falsehood
falseness
foul play
furtiveness
guile
halving
hypocrisy
improbity
indirection
insidiousness
dissembling
misrepresentation
duplicitous
avarice
barbarity
baseness
betrayal
chicanery
depravity
disloyalty
insincerity
knavery
rapacity
treachery
trickery
wickedness
authenticity
complicity
ethnicity
multiplicity
publicity
simplicity
synchronicity