fidelity

Meaning

Noun

• Faithfulness to one's duties.
• Loyalty to one's spouse or partner, including abstention from cheating or extramarital affairs.
• Accuracy, or exact correspondence to some given quality or fact.
• The degree to which a system accurately reproduces an input.

Related

Opposite words

• infidelity

Origin

• 15th century, from Middle English, from Middle French fidélité, from Latin fidēlitās, from fidēlis, from fidēs (English faith), from Proto-Indo-European *bʰidʰ-, zero-grade of *bʰeydʰ- (English bide). fealty.