I need a list of English words that are morphologically similar, but when it comes to meaning, they should be completely different.
In Appendix A and Appendix B of Rastle, Davis, Marslen-Wilson, Tyler (2000), there are listings of the stimuli used. You want the '-M-S+O’ condition (i.e., not related morphological or semantically, but similar orthographically). There are 48, I think, so maybe that will be helpful. They sometimes differ by more than 2 characters.