thirty pieces of silver
counterbetrayal
et tu
double cross
double-crossing
betrayal
treason
perfidy
treachery
rebetrayal
Judas Iscariot
betraying
betrayment
ratfink
grass up
grass on
assfuck
burn
unbetray
vindictiveness
talion
vengefulness
Iscariotism
getback
pay out
payback
counterstroke
nonbetrayal
self-redress
stab in the back
score
grudge
retaliationist
grievance
perfidiousness
reprisal
eat one's young
doublecross
fink
vengeance
throw under the bus
rebetray
throw something in someone's face
traitorize
revenger
retaliatingly
heap coals of fire on someone's head
sell
nonrevenge
retributional