以降 （イコウ） on and after, from ... onward, since

以下 （イカ） not exceeding ..., not more than ..., ... and under, ... and below, ... or fewer, below (a standard, level, etc.), under, beneath, less than, the following, the below-mentioned, the rest, followed by ..., including ..., ... and other (employees, officials, etc.)

生滅滅已 （ショウメツメツイ） going beyond life and death and entering Nirvana

止む （やむ） to cease, to stop, to be over

やむを得ない （やむをえない） cannot be helped, unavoidable

既に （すでに） already, previously, before, undeniably, unmistakably, in the first place