Benedict Arnold
Brutus
Judas
Judas Iscariot
Machiavellian
Quisling
archtraitor
betrayer
cockatrice
coconspirator
collude
consent
conspirator
conspirer
counterplotter
coöperate
double agent
double-crosser
double-dealer
exploiter
finagler
informer
intrigant
intriguer
machinator
maneuverer
operator
opportunist
plotter
quisling
rat
schemer
serpent
snake
timeserver
traitor
treasonist
trimmer
turncoat
wink
wire-puller
algolagnia
consulter
contemner
denouncer
deviser
egging
employé
exoneration
impell
inamorata
jerclayne
jobber
joylessness
levelling
no
noes'
non-injury
pederasty
reduced
resister
roustabouts
so
strangling
worshiper