fidelity

n. 忠实, 诚实, 忠诚, 保真度
【电】 逼真度

名词复数:fidelities 

fi.del.i.ty

n.（名词）
【复数】 fi.del.i.ties 缩写 fid.
Faithfulness to obligations, duties, or observances.
忠诚，忠实：忠于职守、义务或责任
Exact correspondence with fact or with a given quality, condition, or event; accuracy.
逼真：与事实或给定的性质、状态或事件完全一致；逼真
The degree to which an electronic system accurately reproduces the sound or image of its input signal.
保真度：指电子系统准确地重新产生接收到的声音或图象的程度

来源：
Middle English fidelite
中古英语 fidelite
from Old French
源自 古法语
from Latin fidôlit3s
源自 拉丁语 fidôlit3s
from fidôlis [faithful]
源自 fidôlis [忠实的]
from fidôs [faith] * see bheidh-
源自 fidôs [信任] *参见 bheidh-

<参考词汇><同义词>fidelity,allegiance,fealty,loyaltyThese nouns denote faithfulness, as to a person or a cause.
这些名词指的是对一个人或一件事的忠诚。
Fidelity implies the unfailing fulfillment of one`s duties and obligations and strict adherence to vows or promises:
Fidelity 意为一丝不苟地履行自己的职责与义务，言而有信或忠于誓言：
例句：
fidelity to one`s spouse;
忠实于自己配偶；

例句：
fidelity to one`s word of honor.
爱惜自己的名誉。

Allegiance is faithfulness, as to a government or state to which one is subject, considered as a duty:
Allegiance 是指对自己的国家或政府忠心，被看作是一种义务：
例句：
.I know no South, no North, no East, no West, to which I owe any allegiance. . . . The Union, Sir, is my country. (Henry Clay).
.我不知道什么东西南北，对这些我毫无职责可言…只有美国，先生，才是我的祖国. （亨利·克莱）。

Fealty, once applied to the obligation of a tenant or vassal to a feudal lord,now suggests faithfulness that one has pledged to uphold:
Fealty 曾用来指臣仆对封建主绝对顺从、忠诚，现在指对自己支持的事物或人忠诚：
例句：
swore fealty to the laws and Constitution of the United States.
发誓绝对遵守和支持美利坚合众国的法律及宪章。

Loyalty implies a steadfast and devoted attachment that is not easily turned aside:
Loyalty 意为不易动摇的、坚实不移的信条：
例句：
loyalty to an oath;
忠实于誓言；

例句：
loyalty to one`s family;
忠于自己的家庭；

例句：
party loyalty;
效忠于党；

例句：
loyalty to an ideal.
忠于理想