Here is the piece. If you can't say fornicate can you say copulate or if not that can you say co-habit? If not that would have to say consummate I suppose. Use your own good taste and judgment.
"Ah, Miss, hope is an excellent thing for such as has the spirits to bear it!" said Mrs Wickam, shaking her head. "My own spirits is not equal to it, but I don't owe it any grudge. I envys them that is so blest!"
If you desire to drain to the dregs the fullest cup of scorn and hatred that a fellow human being can pour out for you, let a young mother hear you call dear baby 'it.'