i Register
In some senses, foregone is marked as informal. Watch for register when choosing this word.
adj
previous, former
bygone
For with the dream foregone, foregone, The deed forborne for ever, The worm, regret, will canker on, And time will turn him never.
inevitable; settled
I know people are still going through the details but it's not a foregone conclusion that it will get confirmation by the Senate.