Antonyms of noun fidelity

1 of 2 senses of fidelity

Sense 2
fidelity, faithfulness -- (the quality of being faithful)
       Antonym of infidelity (Sense 1)
      => infidelity, unfaithfulness -- (the quality of being unfaithful)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun fidelity

2 senses of fidelity

Sense 1
fidelity -- (accuracy with which an electronic system reproduces the sound or image of its input signal)
       => accuracy, truth -- (the quality of being near to the true value; "he was beginning to doubt the accuracy of his compass"; "the lawyer questioned the truth of my account")

Sense 2
fidelity, faithfulness -- (the quality of being faithful)
       => quality -- (an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare)