Definitions

1. preposition

indicating a point or time before which something happens or exists

“They will meet at 8 PM until midnight.”

2. conjunction

used to indicate that something will continue to exist or happen for a certain period of time

“I’ll be here until you’re ready to leave.”

3. verb

to continue in a particular state or activity up to a certain point or time

“She’ll work until she finishes the project.”

4. noun

the period of time up to a specified point or time

“The concert will go on until the end of the night.”