As a Noun: 1. The amount of importance or usefulness of some thing or action to people. The importance or usefulness may be personal, practical, spiritual, moral, material, or monetary. English = worth, value. As a Verb or Adjective: 1. Of an action or thing, to have an amount of importance or usefulness to people. English = (be) worthwhile, (be) valuable. 2. Used immediately before a noun or a sign for an amount of money to mean that what is being talked about can be thought of as equivalent or exchangeable for that thing or that amount of money. English = (be) worth, (be) valued at. As Modifier: 1. Used immediately before a verb to mean that the action of the verb is important or useful in some way to do. English = worth (doing), worthwhile (to do).