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until

The definition of until is up to the time of, or before.

(conjunction)

An example of until is a person running quickly up to the time they stop.
An example of until is a teenager not being able to go out before all of their chores are done.

Until is defined as before a specific time.

(preposition)

An example of until is when a student can't leave school until June 1st of a specific year, which is the scheduled last day of their senior year of school.

See until in Webster's New World College Dictionary

up to the time of; till (a specified time or occurrence): until payday
before (a specified time or occurrence): used with a negative: not until tomorrow
Scot. to or toward

Origin: ME untill < un- (see unto) + till, to, till

conjunction

up to the time when or that: until you leave
to the point, degree, or place that: heat the water until it boils
before: used with a negative: not until he tells you

See until in American Heritage Dictionary 4

preposition

Up to the time of: We danced until dawn.
Before (a specified time): She can't leave until Friday.
Scots Unto; to.

conjunction

Up to the time that: We walked until it got dark.
Before: You cannot leave until your work is finished.
To the point or extent that: I talked until I was hoarse. See Usage Note at till².

Origin:

Origin: Middle English

Origin: : un-, up to (from Old Norse und; see ant- in Indo-European roots)

Origin: + til, till; see till²

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