I am not sure why you would add 10000 stopwords. Stopwords are common words that are useless to search on. For instance words like "then", "for", "and". If you add a word like "chickenpox" to the stoplist, then users cannot search for "chickenpox".

Putting a word like "résumé" into a stoplist may make sense if you have a recruiting database and about every document is a résumé anyway. But 10000 such words?