How to index the words "winter" and "winter" in sphinx in the same way?

Question

Sphinx

How to index the words "winter" and "winter" in sphinx in the same way?
Now with the built-in stemming enabled, the words winter and winter have different stems (winter and winter, respectively). And it is required to regard them as one and the same.
A similar example would be the words "woman" and "feminine"

Answer 1

Maybe there is a ready-made dictionary for wordforms somewhere?