already

"already", as Webster correctly nodes below, means "prior to some specified time".

So, you Americans, why do you insist on using it to mean "immediately" or "then"?

Examples:

"Get your ass out of here already!"

"Yeah, well all that's nice, but how do you play it already?"

Stop it at once (or should I say already) and desist from abusing this wonderful language you have inherited.

However, more to the point, language use is a moving target, and words mean what people use them to mean. The evidence of a dictionary nearly a century old says little about the meaning(s) of a word today, or changes in their geographical distribution.

Al*read"y (#), adv. [All (OE. al) + ready.]

Prior to some specified time, either past, present, or future; by this time; previously.

Exod. i. 5.

I say unto you, that Elias is come already. Matt. xvii. 12.

⇒ It has reference to past time, but may be used for a future past; as, when you shall arrive, the business will be already completed, or will have been already completed.

© Webster 1913.