1. Already: This is the most common meaning of "mou." It's used to indicate that something has already happened or been done.
* Examples:
* 食べたよ。もう。 (Tabeta yo. Mou.) - I already ate.
* もう終わった。 (Mou owatta.) - It's already finished.
2. No more: This meaning is used to express that something has stopped or is no longer happening.
* Examples:
* もう来ない。 (Mou konai.) - They won't come anymore.
* もう飲まない。 (Mou nomanai.) - I won't drink anymore.
3. (Used with a negative verb) Yet: This usage is similar to "not yet" in English.
* Examples:
* まだ来ない。もう？ (Mada konai. Mou?) - They haven't come yet. (Is it already [time]?)
* まだ終わってない。もう？ (Mada owattenai. Mou?) - It's not finished yet. (Is it already [time]?)
4. (Used with a negative verb) No longer: This meaning is similar to "not anymore" in English.
* Examples:
* もう行かない。 (Mou ikanai.) - I won't go anymore.
* もう食べない。 (Mou tabenai.) - I won't eat anymore.
5. (Used with a positive verb) Just: This meaning is used to express that something just happened or is about to happen.
* Examples:
* もう行く。 (Mou iku.) - I'm just going.
* もう来た。 (Mou kita.) - I just arrived.
It's important to consider the context when determining the meaning of "mou." The surrounding words and phrases will give you a better understanding of what is being said.