- by or before a stated or implied time: he is already here
- at a time earlier than expected: is it ten o'clock already?
WordReference Random House Learner's Dictionary of American English © 2014
before some specified or implied time:I'm sorry, she has already left for the day. She had already arrived and was waiting for you. so soon; so early;
sooner than expected:I can't believe she is already here. Informal. (used to express exasperation or impatience): Let's go already! See still.