Prudent conduct; politic or expedient behaviour; prudence, shrewdness, sagacity. Now chiefly in bad policy, good policy, etc. Formerly also…

= policy, n.1 in various senses. Obsolete.

As a mass noun. Expediency. Obsolete.

The quality or state of being expedient; suitability to the circumstances or conditions of the case; fitness, advantage; †an advantage.

= expediency, n. 1 ? Obsolete.