1687. Unhappy. An unhappy lad may make a good man.

1688. Units. The greatest number is made up of units.

1689. Unknown. Unknown, unmissed.

1690. Unminded. Unminded, unmoaned.

1691. Untaught. Better untaught than ill-taught.

1692. Use. Use is second nature.

1693. Use. Use the means, and God will give the blessing.

1694. Utility. Utility is preferable to grandeur.