also: もぉ
adverb
already; yet; by now; no longer
Indicates that a state or action has occurred by the present time, often with a nuance of earlier than expected. In negative sentences, it means 'no longer' or 'not anymore'.
もう昼ごはんを食べましたか。
Have you already eaten lunch?
彼はもうここにはいません。
He is no longer here.
adverb
Expresses that something will happen in the near future, often with a sense of imminence.
もうすぐ電車が来ます。
The train will arrive soon.
adverb
Used with quantities or additional items to mean 'more', 'further', or 'another'. Often appears with numbers or counters.
もう一杯コーヒーをください。
Please give me another cup of coffee.
もう少し待ってください。
Please wait a little more.
Search-only kana form; represents an elongated pronunciation.
もう indicates completion or imminence, while まだ means 'still' or 'not yet', often used in negative sentences to contrast with もう.
The origin is uncertain, but it is a native Japanese adverb that has been used since Old Japanese.