Answer:
- A language, such as Arameian, that is no longer spoken
Step-by-step explanation:
The lost languages are languages that have gone extinct over time. These languages were spoken by a group of people in the past and existed for a particular period of time in a particular area.
Over time though, these languages have started to be replaced by other languages, some forcefully imposed, some because they were advantageous. That has gradually led to a decrease in the number of speakers of the language, and over time there was no one speaking it. That process has taken only several years in some cases, and several hundreds, or even a thousand of years.
Examples of such languages are the Arameian language from Mesopotamia, Tocharian language from northwestern China, Thracian from the eastern Balkans and many more.