Is there a universal (regardless of the context) way to say "already"?


[JMDict](http://www.edrdg.org/jmdict/edict_doc.html) lists several words for
[already](http://tangorin.com/general/already) marked as common:

> もう
>
> 既に
>
> 最早
>
> 早
>
> 先刻
>
> 疾っくに
>
> 兼ねて

Is there any difference between all these "already" words, and is there among
them a "universal" one which can be used in any context?




The answer would be "もう"  
I'm not sure how many contexts it could be for the usage of "already" but
here's just a few basic examples:

> I already ate = **もう** ご飯食べた
>
> Oh, it's already 12? = あれ、 **もう** 12時ですか
>
> We're already late = 僕ら、 **もう** 遅れてるんだ
>
> I already know that = **もう** 知ってるんだよ

Hope it helps.




The answer would be "もう"  
I'm not sure how many contexts it could be for the usage of "already" but
here's just a few basic examples:

> I already ate = **もう** ご飯食べた
>
> Oh, it's already 12? = あれ、 **もう** 12時ですか
>
> We're already late = 僕ら、 **もう** 遅れてるんだ
>
> I already know that = **もう** 知ってるんだよ

Hope it helps.

