FEALTY Meaning of FEALTY in English [ 'fi:əlti ]■ noun historical a feudal tenant's or vassal's sworn loyalty to a lord.OriginME: from OFr. feau(l)te , fealte , from L. fidelitas (see fidelity ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004