Synonyms for False-heartedness:

• n.

  •deceitfulness (noun)
  • underhandedness,
  • dishonesty.
  •falseness (noun)
  • dis honesty,
  • un faithfulness,
  • un-faithfulness,
  • dis-loyalty,
  • dis honesties,
  • un-faithfulnesses,
  • un faithfulnesses,
  • in-fidelity,
  • dis loyalty,
  • dis-honesties,
  • dis-honesty,
  • in fidelities,
  • in-fidelities,
  • dis-loyalties,
  • in fidelity,
  • false heartedness,
  • dis loyalties.
  •Other relevant words: (noun)
  • perfidiousness,
  • falsifications,
  • treacherousness,
  • falseheartedness,
  • falsification,
  • traitorousness,
  • falseness.
  •perfidiousness (noun)
  • fickleness,
  • inconstancies,
  • inconstancy.

• Other synonyms:

  •
  • unfaithfulness,
  • falsity.
  •
  • disloyalty,
  • perfidy,
  • faithlessness.
  •
  • treachery,
  • infidelity.