Meaning

• 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"

• To take (someone) on a date, or a series of dates.

• (by extension) To have a steady relationship with; to be romantically involved with.

• (by extension) To have a steady relationship with each other; to be romantically involved with each other.

  "They met a couple of years ago, but have been dating for about five months."

• To make or become old, especially in such a way as to fall out of fashion, become less appealing or attractive, etc.

  "The comedian dated himself by making quips about bands from the 1960s."

• (with from) To have beginning; to begin; to be dated or reckoned.

Meaning

• 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• Outdated.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."

• No longer fashionable.

  "Slang can become dated very quickly."