n. pl. fe·al·ties
a. The fidelity owed by a vassal to his feudal lord.
b. The oath of such fidelity.
2. Allegiance. See Synonyms at fidelity.
[Middle English fealtye, from Old French fealte, from Latin fidēlitās, faithfulness, from fidēlis, faithful, from fidēs, faith; see bheidh- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.