Let's take a look at the 10 most likely words to have been used in a loan that repaid:
These words range from lender, at 8% more likely to have Paid than average, to ratio, at 4% more likely to pay than average.
Interesting here is the discrepancy between the words of loss -- maxing out at 23% less likely to pay than average -- and the words of win -- maxing out only 8% more likely to pay than average. It could be that the words a borrower chooses may only help in identifying lenders who are less likely than average to repay, but not show borrowers who are more likely to repay.
Update Aug 30: I have added a post on the methodology used to find these words.