Where can I get a database or collect it of all words ending in -ost?

Question

Data request

We need a database of words ending in -ost, for example: stupidity, difficulty, impeccability. Where can I get such a database of words or collect? Maybe for such words there is some kind of rule in the Russian language so that you can take a word and bring it into the desired form. At the moment I have collected a database of 5000 words, but this is not enough for my ideas.

Answer 1

Download wikipedia dump and find all the words that you like.

Answer 2

Download spelling dictionary and parse

Answer 3

Looks like you need a reverse Russian dictionary