What quality would be opposite to fidelity?

Fidelity refers to loyalty, faithfulness, or adherence to an obligation or duty. The quality most opposite to fidelity is disloyalty. Disloyalty embodies a lack of allegiance or support, which stands in direct contrast to the commitment and steadfastness associated with fidelity. In other words, while fidelity involves a strong, unwavering commitment to someone or something, disloyalty denotes a betrayal or abandonment of that commitment.

The other choices do not convey this direct contradiction. Faithfulness, for example, is synonymous with fidelity and reinforces the idea of loyalty. Integrity relates to upholding moral principles and honesty, which, while admirable, does not directly counter fidelity. Lastly, attachment refers to an emotional connection but doesn’t inherently imply loyalty or disloyalty. Thus, disloyalty effectively represents the opposite quality of fidelity.