different between fidelity vs faithless

English

Etymology

15th century, from Middle English [Term?], from Middle French fidélité, from Latin fid?lit?s, from fid?lis (“faithful”), from fid?s (“faith, loyalty”) (English faith), from Proto-Indo-European *b?id?-, zero-grade of *b?eyd?- (“to command, to persuade, to trust”) (English bide). Doublet of fealty.

Pronunciation

• IPA^(key): /f??d?l.?.ti/, /fa??d?l.?.ti/

Noun

fidelity (countable and uncountable, plural fidelities)

1. Faithfulness to one's duties.

2. Loyalty to one's spouse or partner, including abstention from extramarital affairs.
3. Accuracy, or exact correspondence to some given quality or fact.
4. The degree to which a system accurately reproduces an input.
   • 2003, Proceedings of the Twenty-ninth International Conference on Very Large Databases, Berlin, Germany, 9-12 September, 2003, page 58:

     By placing them closer to the source, we can reduce the number of messages in the system and this in turn is likely to improve the fidelity of the system.

Quotations

• 2004, High-Fidelity Medical Imaging Displays (Aldo Badano, Michael J. Flynn, Jerzy Kanicki, ?ISBN
• 2008, David L. Nelson, Michael M. Cox, Absolute Ultimate Guide for Lehninger Principles of Biochemistry ?ISBN, page S-305:

  The isoleucyl-tRNA synthetase has a proofreading function that ensures the fidelity of the aminoacylation reaction, but the histidyl-tRNA synthetase lacks such a proofreading function.

Antonyms

• infidelity

Derived terms

• fidelitous
• fidelity bond
• high fidelity

Related terms

• affidavit
• bide
• faith

Translations

Further reading

• fidelity in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• fidelity in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

English

Etymology

From Middle English feithles, equivalent to faith +? -less.

Adjective

faithless (comparative more faithless, superlative most faithless)

1. Lacking faith; lacking belief in something.
2. Not believing in God, religion, or a comparable ideology.
3. Unfaithful (said of people, towards their partners)
   • 1996, Frederick Ahl, Hanna Roisman, The Odyssey re-formed, p. 283:

     Menelaus, who fought to recover his faithless wife, has clearly rooted himself in Sparta for the remainder of his life […]

4. Not observant of promises or covenants.
5. Not true to allegiance, duty, or vows

   Synonyms: perfidious, treacherous, disloyal

6. Serving to disappoint or deceive

   Synonyms: delusive, unsatisfying

Derived terms

• faithless elector
• faithlessly
• faithlessness

Anagrams

• flashiest, stalefish