the obligation or the engagement to be faithful to a lord, usually sworn to by a vassal.
2.
fidelity; faithfulness.
Origin: 1275–1325; ME feute, feaute, fealtye < AF, OF feauté, fealté < L fidēlitāt- (s. of fidēlitās) fidelity; internal -au-, -al- from feal, reshaping (by substitution of -al--al1) of fe(d)eil < L fidēlis
Faithfulness; 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 Indo-European roots.]