strict observance of promises, duties, etc.

a servant's fidelity.

loyalty

fidelity to one's country.

conjugal faithfulness.

adherence to fact or detail.

accuracy; exactness

The speech was transcribed with great fidelity.

Audio, Video . the degree of accuracy with which sound or images are recorded or reproduced.

noun

disloyalty , faithlessness , infidelity , lying , treachery , inconstancy , nonconformity , unsteadiness , vacillation , wavering

noun

allegiance , ardor , attachment , constancy , dependability , devotedness , devotion , faith , fealty , integrity , loyalty , piety , reliability , staunchness , steadfastness , true-heartedness , trustworthiness , accuracy , adherence , adhesion , closeness , correspondence , exactitude , exactness , faithfulness , naturalism , preciseness , precision , realism , scrupulousness , verism , correctness , truth , veraciousness , veridicality , verity , honesty , honor , love , oath , troth