Already (adverb)

1. Before now, previously.
2. By this time.
3. Even now.

Origin:

From middle english already, from old english ǣr lǣne ("already, before now"), from ǣr ("early") + lǣne ("late"). cognate with german schon, dutch al, swedish redan.

Examples:

1. I have already seen that movie.
2. He has already left the house.
3. She has already finished her homework.
4. They have already arrived.
5. I have already told you that.