Looking up...
up to the time that something happens
She studied until midnight.
Her studying continued until midnight.
The store is open until 9 PM.
The store's operating hours extend until 9 PM.
Often used to indicate a deadline or endpoint in time.
not before a specified time
You can't leave until you finish your homework.
Departure is not allowed before homework is completed.
Emphasizes that an action or event must wait until a condition is met.
'Until' can function as a conjunction (e.g., 'Wait until I call you') or a preposition (e.g., 'Stay here until noon').
'Until' always refers to a point in time, not a duration. Use 'for' to indicate duration (e.g., 'for two hours').
From Middle English 'untill', from Old English 'on til' (on to).
Can be used as both a conjunction and a preposition. Often interchangeable with 'till' in informal contexts.