词源fide+词缀lity，中文意思是n. （对配偶或伴侣的）忠贞(对人、组织或信仰的）忠诚精确性（CD播放器、收音机、电视机等设备的）保真度

For memes， however， fidelity is not always so important.然而，对于模因来说，准确性却不是很重要的因素。

People have failed to act in fidelity to their vows.