"Stop words" list for English?

Depending on the subdomain of English you are working in, you may have/wish to compile your own stop word list. Some generic stop words could be meaningful in a domain. E.g. The word "are" could actually be an abbreviation/acronym in some domain. Conversely, you may want to ignore some domain specific words depending on your application which you may not want to ignore in the domain of general English. E.g. If you are analyzing a corpus of hospital reports, you may wish to ignore words like 'history' and 'symptoms' as they would be found in every report and may not be useful (from a plain vanilla inverted index perspective).

Otherwise, the lists returned by Google should be fine. The Porter Stemmer uses this and the Lucene seach engine implementation uses this.

The magic word to put into Google is "stop words". This turns up a reasonable-looking list.

MySQL also has a built-in list of stop words, but this is far too comprehensive to my tastes. For example, at our university library we had problems because "third" in "third world" was considered a stop word.

these are called stop words, check this sample