Undercapitalisation – insufficient investment of funds in a business to support its activities and enable expansion.

Undercutting – setting prices lower than those of a competitor, usually with the intention of retaining or increasing market share.

Unsecured loan – a loan that is not backed up by any collateral, such as a home or an automobile offered as security.

URL (IT) – the Uniform Resource Locator is the address of a website on the internet.