既(すで)に

already; previously

既存(きそん)

existing; already in existence

既婚(きこん)

married

既製品(きせいひん)

ready-made product

既成(きせい)

established; conventional

既定(きてい)

predetermined; default

既読(きどく)

read; already read

既知(きち)

known; already known

既刊(きかん

既(すで)に店(みせ)は閉(し)まっていました。

The shop had already closed.

メールは既読(きどく)なのに、返事(へんじ)がありません。

Although the email has been read, there is no reply.