To note the time or place of writing or executing; to express in an instrument the time of its execution.

“to date a letter, a bond, a deed, or a charter”

To note or fix the time of (an event); to give the date of.

To determine the age of something.

“to date the building of the pyramids”

Marked with a date.

“The first dated entry in the diary was from October 1922.”

Outdated.

“"Omnibus" is a dated term for a bus.”

Anachronistic; being obviously inappropriate for its present context.

“Calling a happy person gay seems awfully dated nowadays; people will assume you mean something else.”