Fidelity to one's lord or master; the feudal obligation by which the tenant or vassal was bound to be faithful to his lord.
The oath by which this obligation was assumed.
The quality of being reliable, dependable, or trustworthy.
the ability to measure the same thing consistently (of a measurement indicating the degree to which the measure is consistent); that is, repeated measurements would give the same result (See also validity).
measurable time of work before failure