Adjective

The word "dead" generally refers to something that is no longer alive, or has ceased to exist or function. It can be used to describe both living organisms and inanimate objects. For example, a dead person is one who has passed away and is no longer alive, while a dead battery is one that has no charge and is unable to power a device. In general, "dead" can refer to a state of cessation of all biological or functional activity, and may be used in various contexts to describe the end of something's life or usefulness.

Example

1. When I found the bird on the ground, it was already dead.
2. After sitting in the garage for years, the car's battery was completely dead and wouldn't start.
3. The company's new product idea was a dead end, as market research showed there was no demand for it.