Inflected forms: pl. fe·al·ties 1a. The fidelity owed by a vassal to his feudal lord. b. The oath of such fidelity. 2. Faithfulness; allegiance. See synonyms at fidelity.
ETYMOLOGY:
Middle English fealtye, from Old French fealte, from Latin fidlits, faithfulness, from fidlis, faithful, from fids, faith. See bheidh- in Appendix I.