What is untill?

"Until" is a conjunction that is used to indicate a point in time or an event that is to happen before the one described in the main clause. Its meaning can be similar to "up to the time when" or "before."

Here are a few examples of how to use "until" in a sentence:

• I didn't eat breakfast until I got to work.
• The movie won't start until everyone is seated.
• He couldn't leave until he finished his work.
• I won't believe it until I see it with my own eyes.

In some cases, "until" can be used to express a negative condition or an exception, as in "I won't stop until I find the truth" or "He never gave up until the final whistle."

Overall, "until" is a useful conjunction that can help to clarify the temporal relationship between different events or actions in a sentence.