以来【いらい】
since, henceforth
以内【いない】
within, inside of, less than
以前【いぜん】
before, prior to, ago, the past, before, previously, former times
以下【いか】
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.)
以後【いご】
after this, from now on, hereafter, thereafter, since (then), after
以上【いじょう】
not less than ..., ... and over, ... and above, ... and upwards, ... or more, beyond (e.g. one's expectations), above, more than, further than, the above, the above-mentioned, the aforementioned, the foregoing, since ..., seeing that ..., now that ..., once ..., that's all, that is the end, the end
以降【いこう】
on and after, from ... onward, since
以外【いがい】
with the exception of, excepting, excluding